|Born||25 August 1910|
|Died||17 April 1996|
Arnold Neustadter (25 August 1910 – 17 April 1996) was an American inventor and businessman. With Danish engineer Hildaur Neilson, he invented the Rolodex desktop rotating card file and other office equipment.
His earlier inventions included the Autodex, a spring-operated phone directory that automatically opened to the selected letter, Swivodex, an inkwell that did not spill, Punchodex, a paper hole puncher, and Clipodex, a transcription aid that attached to a stenographer's knee.
- History of the Rolodex Archived 2008-11-07 at the Library of Congress Web Archives, about.com
- Rolodex Card Files: A Triumph of Low Technology, Boston Globe
- Arnold Neustadter Dies at 85; Orderly Mind Behind Rolodex, New York Times