Douglas Engelbart in 2008
|Born||Douglas Carl Engelbart
January 30, 1925
|Died||July 2, 2013
The Doug Engelbart Institute
|Alma mater||Oregon State College (BS 1948)
University of California, Berkeley (MS 1953, PhD 1955)
|Thesis||A Study of High-Frequency Gas-Conduction Electronics in Digital Computers (1956)|
|Doctoral advisor||Paul L. Morton
John R. Woodyard
|Known for||Computer mouse
|Notable awards||National Medal of Technology (2000),
Turing Award (1997)
Norbert Wiener Award for Social and Professional Responsibility,
Computer History Museum Fellow Award (2005)
Douglas Carl Engelbart (January 30, 1925 – July 2, 2013) was an American engineer and inventor, and an early computer and Internet pioneer. He is best known for his work on founding the field of human–computer interaction, particularly while at his Augmentation Research Center Lab in SRI International, resulting in the invention of the computer mouse, and the development of hypertext, networked computers, and precursors to graphical user interfaces. These were demonstrated at The Mother of All Demos in 1968. Engelbart's Law, the observation that the intrinsic rate of human performance is exponential, is named after him.
In the early 1950s, he decided that instead of "having a steady job" – such as his position at NASA's Ames Research Center – he would focus on making the world a better place. He reasoned that because the complexity of the world's problems were increasing, and that any effort to improve the world would require the coordination of groups of people, the most effective way to solve problems was to augment human intelligence and develop ways of building collective intelligence. He believed that the computer, which previously was at the time thought of only as a tool for automation, would be an essential tool for future knowledge workers to solve such problems. He was a committed, vocal proponent of the development and use of computers and computer networks to help cope with the world’s increasingly urgent and complex problems. Engelbart embedded a set of organizing principles in his lab, which he termed "bootstrapping". His belief was that when human systems and tool systems were aligned, such that workers spent time "improving their tools for improving their tools" it would lead to an accelerating rate of progress.
Under Engelbart's guidance, the Augmentation Research Center developed, with funding primarily from DARPA, the NLS to demonstrate numerous technologies, most of which are now in widespread use; this included the computer mouse, bitmapped screens, hypertext; all of which were displayed at The Mother of All Demos in 1968. The lab was transferred from SRI to Tymshare in the late 1970s, which was acquired by McDonnell Douglas in 1984, and NLS was renamed Augment. At both Tymshare and McDonnell Douglas, Engelbart was limited by a lack of interest in his ideas and funding to pursue them, and retired in 1986.
In 1988, Engelbart and his daughter Christina launched the Bootstrap Institute – later known as The Doug Engelbart Institute – to promote his vision, especially at Stanford University; this effort did result in some DARPA funding to modernize the user interface of Augment. In December 2000, United States President Bill Clinton awarded Engelbart the National Medal of Technology, the United States' highest technology award. In December 2008, Engelbart was honored by SRI at the 40th Anniversary celebration of the 1968 "Mother of All Demos".
- 1 Early life and education
- 2 Career and accomplishments
- 3 Honors
- 4 See also
- 5 References
- 6 Further reading
- 7 External links
Early life and education
He was the middle of three children, with a sister Dorianne (3 years older), and a brother David (14 months younger). The family lived in Portland, Oregon, in his early years, and moved to the surrounding countryside along Johnson Creek when he was 8. His father died one year later. He graduated from Portland's Franklin High School in 1942.
Midway through his college studies at Oregon State College at Corvallis, near the end of World War II, he was drafted into the United States Navy, serving two years as a radar technician in the Philippines. On a small island, in a tiny hut on stilts, he first read Vannevar Bush's article "As We May Think", which greatly inspired him. He returned to Oregon State College and completed his bachelor's degree in electrical engineering in 1948. While at Oregon State College, he was a member of Sigma Phi Epsilon social fraternity. He was hired by the National Advisory Committee for Aeronautics at the Ames Research Center, where he worked in wind tunnel maintenance. In his off hours he enjoyed hiking, camping, and folk dancing. It was there he met Ballard Fish (August 18, 1928 – June 18, 1997) who was just completing her training as an Occupational Therapist. The two married on May 5, 1951 in Portola State Park. Soon after, Doug left NACA to pursue a PhD at UC Berkeley.
Career and accomplishments
Engelbart's career was inspired in December 1950 when he was engaged to be married and realized he had no career goals other "than a steady job, getting married and living happily ever after". Over several months he reasoned that:
- he would focus his career on making the world a better place
- any serious effort to make the world better requires some kind of organized effort
- harnessing the collective human intellect of all the people contributing to effective solutions was the key
- if you could dramatically improve how we do that, you'd be boosting every effort on the planet to solve important problems — the sooner the better
- computers could be the vehicle for dramatically improving this capability.
In 1945, Engelbart had read with interest Vannevar Bush's article "As We May Think", a call to action for making knowledge widely available as a national peacetime grand challenge. He had also read something about the recent phenomenon of computers, and from his experience as a radar technician, he knew that information could be analyzed and displayed on a screen. He envisioned intellectual workers sitting at display "working stations", flying through information space, harnessing their collective intellectual capacity to solve important problems together in much more powerful ways. Harnessing collective intellect, facilitated by interactive computers, became his life's mission at a time when computers were viewed as number crunching tools.
He enrolled in graduate school in electrical engineering at University of California, Berkeley, graduating with a Master of Science degree in 1953, and a Ph.D. in 1955. As a graduate student at Berkeley he assisted in the construction of the California Digital Computer project CALDIC. His graduate work led to several patents. After completing his PhD, Engelbart stayed on at Berkeley as an assistant professor to teach for a year, and left when it was clear he could not pursue his vision there. Engelbart then formed a startup company, Digital Techniques, to commercialize some of his doctorate research on storage devices, but after a year decided instead to pursue the research he had been dreaming of since 1951.
SRI and the Augmentation Research Center
Engelbart took a position at SRI International (known then as Stanford Research Institute) in Menlo Park, California in 1957. He initially worked for Hewitt Crane on magnetic devices and miniaturization of electronics; Engelbart and Crane became close friends. At SRI, Engelbart gradually obtained over a dozen patents (some resulting from his graduate work), and by 1962 produced a report about his vision and proposed research agenda titled Augmenting Human Intellect: A Conceptual Framework.
This led to funding from ARPA to launch his work. Engelbart recruited a research team in his new Augmentation Research Center (ARC, the lab he founded at SRI). Engelbart embedded a set of organizing principles in his lab, which he termed "bootstrapping strategy". He designed the strategy to accelerate the rate of innovation of his lab.
The ARC became the driving force behind the design and development of the oN-Line System (NLS). He and his team developed computer interface elements such as bitmapped screens, the mouse, hypertext, collaborative tools, and precursors to the graphical user interface. He conceived and developed many of his user interface ideas in the mid-1960s, long before the personal computer revolution, at a time when most computers were inaccessible to individuals who could only use computers through intermediaries (see batch processing), and when software tended to be written for vertical applications in proprietary systems.
Engelbart applied for a patent in 1967 and received it in 1970, for the wooden shell with two metal wheels (computer mouse – U.S. Patent 3,541,541), which he had developed with Bill English, his lead engineer, a few years earlier. In the patent application it is described as an "X-Y position indicator for a display system". Engelbart later revealed that it was nicknamed the "mouse" because the tail came out the end. His group also called the on-screen cursor a "bug", but this term was not widely adopted.
He never received any royalties for his mouse invention. During an interview, he said "SRI patented the mouse, but they really had no idea of its value. Some years later it was learned that they had licensed it to Apple Computer for something like $40,000." Engelbart showcased the chorded keyboard and many more of his and ARC's inventions in 1968 at The Mother of All Demos.
Engelbart slipped into relative obscurity after 1976. Several of his researchers became alienated from him and left his organization for Xerox PARC, in part due to frustration, and in part due to differing views of the future of computing. Engelbart saw the future in collaborative, networked, timeshare (client-server) computers, which younger programmers rejected in favor of the personal computer. The conflict was both technical and ideological: the younger programmers came from an era where centralized power was highly suspect, and personal computing was just barely on the horizon.
Engelbart served on the board of directors of Erhard Seminars Training (EST). Several key ARC personnel were also involved. Although EST had been recommended by other researchers, the controversial nature of EST and other social experiments reduced the morale and social cohesion of the ARC community.
The 1969 Mansfield Amendment, which ended military funding of non-military research, the end of the Vietnam War, and the end of the Apollo program reduced ARC's funding from ARPA and NASA. SRI's management, which disapproved of Engelbart's approach to running the center, placed the remains of ARC under the control of artificial intelligence researcher Bertram Raphael, who negotiated the transfer of the laboratory to a company called Tymshare. Engelbart's house in Atherton, California burned down during this period, causing him and his family further problems. Tymshare took over NLS and the lab that Engelbart had founded, hired most of the lab's staff including its creator as a Senior Scientist, renamed the software Augment, and offered it as a commercial service via its new Office Automation Division. Tymshare was already somewhat familiar with NLS; when ARC was still operational, it had experimented with its own local copy of the NLS software on a minicomputer called OFFICE-1, as part of a joint project with ARC.
At Tymshare, Engelbart soon found himself marginalized and relegated to obscurity. Operational concerns at Tymshare overrode Engelbart's desire to do further research. Various executives, first at Tymshare and later at McDonnell Douglas, which acquired Tymshare in 1984, expressed interest in his ideas, but never committed the funds or the people to further develop them. His interest inside of McDonnell Douglas was focused on the enormous knowledge management and IT requirements involved in the life cycle of an aerospace program, which served to strengthen Engelbart's resolve to motivate the information technology arena toward global interoperability and an open hyperdocument system. Engelbart retired from McDonnell Douglas in 1986, determined to pursue his work free from commercial pressure.
Bootstrap and the Doug Engelbart Institute
Teaming with his daughter, Christina Engelbart, in 1988 he founded the Bootstrap Institute to coalesce his ideas into a series of three-day and half-day management seminars offered at Stanford University 1989–2000. By the early 1990s there was sufficient interest among his seminar graduates to launch a collaborative implementation of his work, and the Bootstrap Alliance was formed as a non-profit home base for this effort. Although the invasion of Iraq and subsequent recession spawned a rash of belt-tightening reorganizations which drastically redirected the efforts of their alliance partners, they continued with the management seminars, consulting, and small-scale collaborations. In the mid-1990s they were awarded some DARPA funding to develop a modern user interface to Augment, called Visual AugTerm (VAT), while participating in a larger program addressing the IT requirements of the Joint Task Force.
Engelbart was Founder Emeritus of the Doug Engelbart Institute, which he founded in 1988 with his daughter Christina Engelbart, who is Executive Director. The Institute promotes Engelbart's philosophy for boosting Collective IQ—the concept of dramatically improving how we can solve important problems together—using a strategic bootstrapping approach for accelerating our progress toward that goal. In 2005 Engelbart received a National Science Foundation grant to fund the open source HyperScope project. The Hyperscope team built a browser component using Ajax and Dynamic HTML designed to replicate Augment's multiple viewing and jumping capabilities (linking within and across various documents).
Later years and death
Engelbart attended the Program for the Future 2010 Conference where hundreds of people convened at The Tech Museum in San Jose and online to engage in dialog about how to pursue his vision to augment collective intelligence.
The most complete coverage of Engelbart's bootstrapping ideas can be found in Boosting Our Collective IQ, by Douglas C. Engelbart, 1995. This includes three of Engelbart's key papers, edited into book form by Yuri Rubinsky and Christina Engelbart to commemorate the presentation of the 1995 SoftQuad Web Award to Doug Engelbart at the World Wide Web conference in Boston in December 1995. Only 2,000 softcover copies were printed, and 100 hardcover, numbered and signed by Engelbart and Tim Berners-Lee. Engelbart's book is now being republished by the Doug Engelbart Institute.
Two comprehensive histories of Engelbart's laboratory and work are in What the Dormouse Said: How the Sixties Counterculture Shaped the Personal Computer Industry by John Markoff and A Heritage of Innovation: SRI's First Half Century by Donald Neilson. Other books on Engelbart and his laboratory include Bootstrapping: Douglas Engelbart, Coevolution, and the Origins of Personal Computing by Thierry Bardini and The Engelbart Hypothesis: Dialogs with Douglas Engelbart, by Valerie Landau and Eileen Clegg in conversation with Douglas Engelbart. All four of these books are based on interviews with Engelbart as well as other contributors in his laboratory.
Engelbart served on the Advisory Boards of the University of Santa Clara Center for Science, Technology, and Society, Foresight Institute, Computer Professionals for Social Responsibility, The Technology Center of Silicon Valley, and The Liquid Information Company.
Engelbart had four children, Gerda, Diana, Christina and Norman with his first wife Ballard, who died in 1997 after 47 years of marriage. He remarried on January 26, 2008 to writer and producer Karen O'Leary Engelbart. An 85th birthday celebration was held at the Tech Museum of Innovation. Engelbart died at his home in Atherton, California on July 2, 2013, due to kidney failure. According to the Doug Engelbart Institute, his death came after a long battle with Alzheimer's disease, which he was diagnosed with in 2007. Engelbart was 88 and was survived by his second wife, the four children from his first marriage, and nine grandchildren.
Historian of science Thierry Bardini argues that Engelbart's complex personal philosophy (which drove all his research) foreshadowed the modern application of the concept of coevolution to the philosophy and use of technology. Bardini points out that Engelbart was strongly influenced by the principle of linguistic relativity developed by Benjamin Lee Whorf. Where Whorf reasoned that the sophistication of a language controls the sophistication of the thoughts that can be expressed by a speaker of that language, Engelbart reasoned that the state of our current technology controls our ability to manipulate information, and that fact in turn will control our ability to develop new, improved technologies. He thus set himself to the revolutionary task of developing computer-based technologies for manipulating information directly, and also to improve individual and group processes for knowledge-work.
Since the late 1980s, prominent individuals and organizations have recognized the seminal importance of Engelbart's contributions. In December 1995, at the Fourth WWW Conference in Boston, he was the first recipient of what would later become the Yuri Rubinsky Memorial Award. In 1997 he was awarded the Lemelson-MIT Prize of $500,000, the world's largest single prize for invention and innovation, and the ACM Turing Award. To mark the 30th anniversary of Engelbart's 1968 demo, in 1998 the Stanford Silicon Valley Archives and the Institute for the Future hosted Engelbart's Unfinished Revolution, a symposium at Stanford University's Memorial Auditorium, to honor Engelbart and his ideas.
Also in 1998, ACM SIGCHI awarded Engelbart the CHI Lifetime Achievement Award. ACM SIGCHI later inducted Engelbart into the CHI Academy in 2002. Engelbart was awarded The Franklin Institute's Certificate of Merit in 1996 and the Benjamin Franklin Medal in 1999 in Computer and Cognitive Science. In early 2000 Engelbart produced, with volunteers and sponsors, what was called The Unfinished Revolution – II, also known as the Engelbart Colloquium at Stanford University, to document and publicize his work and ideas to a larger audience (live, and online).
In December 2000, United States President Bill Clinton awarded Engelbart the National Medal of Technology, the United States' highest technology award. In 2001 he was awarded the British Computer Society's Lovelace Medal. In 2005, he was made a Fellow of the Computer History Museum "for advancing the study of human-computer interaction, developing the mouse input device, and for the application of computers to improving organizational efficiency." He was honored with the Norbert Wiener Award, which is given annually by Computer Professionals for Social Responsibility. Robert X. Cringely did an hour long interview with Engelbart on December 9, 2005 in his NerdTV video podcast series.
On December 9, 2008, Engelbart was honored at the 40th Anniversary celebration of the 1968 "Mother of All Demos". This event, produced by SRI International, was held at Memorial Auditorium at Stanford University. Speakers included several members of Engelbart's original Augmentation Research Center (ARC) team including Don Andrews, Bill Paxton, Bill English, and Jeff Rulifson, Engelbart's chief government sponsor Bob Taylor, and other pioneers of interactive computing, including Andy van Dam and Alan Kay. In addition, Christina Engelbart spoke about her father's early influences and the ongoing work of the Doug Engelbart Institute.
In June 2009, the New Media Consortium recognized Engelbart as an NMC Fellow for his lifetime of achievements. In 2011, Engelbart was inducted into IEEE Intelligent Systems' AI's Hall of Fame. Engelbart received an honorary doctorate from Yale University in May 2011, their first Doctor of Engineering and Technology.
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- "Ph.D. Dissertations – 1955". Electrical Engineering and Computer Science, College of Engineering, University of California Berkeley. Retrieved 2013-07-03.
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- "Douglas C. Engelbart". Hall of Fellows. Computer History Museum. Retrieved 2012-06-17.
- Markoff, John. https://www.youtube.com/watch?v=VeSgaJt27PM. Missing or empty
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- Dalakov, Georgi. "Biography of Douglas Engelbart". History of Computers. Retrieved 2012-07-29.
- "Citation Recipients" (PDF). Sigma Phi Epsilon. p. 5. Retrieved 2013-08-14.
- "Prominent Alumni: Business". Sigma Phi Epsilon. Retrieved 2013-08-14.
- "Happy Birthday Memories". Happy Birthday Doug Engelbart!.
- Engelbart, Douglas. "Curriculum Vitae". The Doug Engelbart Institute. Retrieved 2011-04-14.
- Edwards, Benj (2008-12-09). "The computer mouse turns 40". Macworld. Retrieved 2009-04-16.
- Tia O'Brien (1999-02-09). "Douglas Engelbart's lasting legacy". San Jose Mercury News. Retrieved 2013-07-04.
- "The Unfinished Revolution II: Strategy and Means for Coping with Complex Problems". Colloquium at Stanford University. The Doug Engelbart Institute. April 2000. Retrieved 2012-06-17.
- "The MIT/Brown Vannevar Bush Symposium: Influence on Doug Engelbart". The Doug Engelbart Institute. Retrieved 2012-06-17.
- Engelbart, Douglas C (October 1962). "Augmenting Human Intellect: A Conceptual Framework". SRI Summary Report AFOSR-3223, Prepared for: Director of Information Sciences, Air Force Office of Scientific Research. SRI International, hosted by The Doug Engelbart Institute. Retrieved 2013-08-11.
- "U.S. Patents held by Douglas C. Engelbart". The Doug Engelbart Institute. Retrieved 2012-06-17.
- "A Lifetime Pursuit". The Doug Engelbart Institute. Retrieved 2013-08-11.
- Markoff, John (2005). What the Dormouse Said. Penguin. p. 70. ISBN 1-101-20108-8.
- "About an Accelerative Bootstrapping Strategy". The Doug Engelbart Institute. Retrieved 2012-06-17.
- Douglas Engelbart's publications indexed by the Scopus bibliographic database, a service provided by Elsevier.
- Douglas Engelbart's publications indexed by the DBLP Bibliography Server at the University of Trier
- List of publications from Microsoft Academic Search
- Douglas Engelbart from the Association for Computing Machinery (ACM) Digital Library
- Hermida, Alfred (2001-11-05). "Mouse inventor strives for more". BBC News Online. Retrieved 2012-06-17.
- English, William K; Engelbart, Douglas; Berman, Melvyn L. "Display-Selection Techniques for Text Manipulation". Stanford MouseSite. Stanford University. Retrieved 2012-07-29.
- Maisel, Andrew. "Doug Engelbart: Father of the Mouse". SuperKids. Retrieved 2012-06-17.
- Engelbart, Douglas C.; et al. (1968-12-09). "SRI-ARC. A technical session presentation at the Fall Joint Computer Conference in San Francisco". NLS demo ’68: The computer mouse debut. Engelbart Collection (Menlo Park, CA: Stanford University Library).
- Bardini, Thierry; Friedewald, Michael (2002). "Chronicle of the Death of a Laboratory: Douglas Engelbart and the Failure of the Knowledge Workshop" (PDF). History of Technology 23: 192–212.
- "About An Open Hyperdocument System (OHS)". The Doug Engelbart Institute. Retrieved 2012-06-17.
- "About NLS/Augment". Doug Engelbart Institute. Retrieved 2013-07-04.
- "Doug's Vision Highlights". Doug Engelbart Institute.
- "HyperScope Basics". The Doug Engelbart Institute. Retrieved 2013-08-11.
- "Douglas Engelbart's HyperScope: Taking Web Collaboration to the Next Level Using Ajax and Dojo". O'Reilly Media. Retrieved 2013-07-03.
- "Douglas Engelbart". Corporation to Community. 2011-02-16. Retrieved 2012-07-29.
- "Engelbart Books". Doug Engelbart institute.
- Donald Neilson (2005). A Heritage of Innovation: SRI's First Half Century. SRI International. ISBN 0-9745208-0-2.
- Landau, Valerie (2009-11-17). The Engelbart Hypothesis: Dialogs with Douglas Engelbart. ISBN 0-615-30890-2..
- "Douglas Engelbart, Foresight Advisor, Is Awarded National Medal of Technology". Update 43 (Foresight Institute). 2000-12-30. Retrieved 2011-04-15.
- "Advisory Board". About Us. The Liquid Information Co. Retrieved 2012-07-29.
- "Celebrating Doug's 85th Birthday". The Doug Engelbart Institute. Retrieved 2011-04-14.
- "Karen O'Leary, Palo Alto, Writer and Producer". Karen O'Leary Engelbart. Retrieved 2011-04-14.
- Mike Swift (2010-01-30). "Honoring a creative force in high tech: Douglas Engelbart turns 85". The San Jose Mercury News.
- "Doug Engelbart American inventor computing legend passes away". GigaOm. 2013-07-03. Retrieved 2013-07-03.
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- "Technology visionary Doug Engelbart, inventor of computer mouse, dies at age of 88". The Washington Post. Associated Press. 2013-07-03. Retrieved 2013-08-14.
- "Honors Awarded to Doug Engelbart". The Doug Engelbart Institute. Retrieved 2012-06-17.
- "Engelbart's Unfinished Revolution: A Symposium at Stanford University". Stanford University Libraries. Stanford University. 1998-12-09. Retrieved 2012-06-17.
- "SIGCHI Awards". SIGCHI. Retrieved 2013-07-03.
- "Colloquium". Doug Engelbart institute.
- "UnRev-II: Engelbart's Colloquium" (video archives). Stanford University. 2000. Retrieved 2013-08-14.
- "Lovelace lecture". British Computer Society. Retrieved 2013-07-14.
- "Winners of the Norbert Wiener Award for Professional and Social Responsibility". CPSR. Retrieved 2013-07-03.
- "NerdTV Episode 11". Internet Archive. 2005-12-09. Retrieved 2013-07-03.
- "Engelbart and the Dawn of Interactive Computing". SRI International. Archived from the original on 2012-01-13.
- "2009 NMC Fellows Award: Doug Engelbart, Ph.D.". New Media Consortium. Retrieved 2013-08-14.
- "AI's Hall of Fame" (PDF). IEEE Intelligent Systems (IEEE Computer Society) 26 (4): 5–15. 2011. doi:10.1109/MIS.2011.64.
- "IEEE Computer Society Magazine Honors Artificial Intelligence Leaders". DigitalJournal.com (press release). PRWeb (Vocus). 2011-08-24. Retrieved 2011-09-18.
- "Yale Awards Honorary Degrees To Joan Didion, Martin Scorsese". Hartford Courant. 2011-05-24. Retrieved 2013-03-31.
- "Citations for Recipients of Honorary Degrees at Yale University 2011". Yale University. 2011-05-23. Retrieved 2013-03-31.
- Burt, David; de la Bruyère, Max (2011-05-23). "University confers 2,907 degrees at 310th Commencement". Yale Daily News. Retrieved 2013-03-31.
- Bardini, Thierry (2000). Bootstrapping: Douglas Engelbart, Coevolution, and the Origins of Personal Computing. Stanford: Stanford University Press. ISBN 0-8047-3723-1.
- Landau, Valerie; Clegg, Eileen (2009). The Engelbart Hypothesis: Dialogs with Douglas Engelbart (2008 edition: Evolving Collective Intelligence). Berkeley: Next Press. The Doug Engelbart Foundation claims the book was not authorized by Douglas Engelbart and he was not a co-author.
- Rheingold, Howard (1985). Tools for Thought. New York: Simon & Schuster. p. 335. ISBN 0-671-49292-6.
- "Douglas Engelbart". xkcd.
|"Collective IQ and Human Augmentation", Interview with Douglas Engelbart|
|Doug Engelbart featured on JCN Profiles, Archive.org|
- Media related to Douglas Engelbart at Wikimedia Commons
- Quotations related to Douglas Engelbart at Wikiquote
- Doug Engelbart's official Web site and home of the Doug Engelbart Institute (formerly Bootstrap)
- Doug Engelbart (1968-12-09). The Demo. Stanford University.
- Douglas Engelbart Interviewed by John Markoff of the New York Times (recorded March 26, 2002)
- Douglas Engelbart at Find a Grave
- "Unauthorized Book: "Engelbart Hypothesis"". Doug Engelbart Institute. Retrieved 2013-07-03.