The fairgrounds became the campus of the University of Washington.
The fair was evolved from an idea of Godfrey Chealander's. Chealander, then Grand Secretary of the Arctic Brotherhood, was involved in the Alaska Territory exhibit at the 1905 Lewis and Clark Exposition in Portland, Oregon. Originally, he pitched William Sheffield of the Alaska Club and James A. Wood, city editor of the Seattle Times on the idea of a permanent exhibit in Seattle about Alaska. This merged with Wood's desire for an exposition to rival Portland's. They soon gained the backing of Times publisher Alden J. Blethen—remarkably, for the time, without gaining the opposition of the rival Seattle Post-Intelligencer.
Edmond S. Meany proposed that the exposition be held on the then largely forested campus of the University of Washington, which in 1905 had exactly three buildings and little deliberate landscaping. At the time, this was considered rather far from the center of town, but Meany eventually sold the others involved on the idea that the forested campus could, itself, be an attraction for out-of-town visitors and that the trolley ride from downtown would not be an obstacle to attendance. Of course, he was also highly aware of what the landscaping and structures could do for the campus.
The state legislature endorsed the fair, with the proviso that it would produce at least four permanent buildings, and that any state monetary contribution would be focused mainly on those buildings. King County (the county in which Seattle is located) stepped up with US$300,000 for a forestry exhibit—the largest log cabin ever built—and $78,000 for other exhibits. Because the original Klondike gold strikes had been in Canada, the concept soon evolved to an "Alaska-Yukon Exposition"; later, at the behest of the Seattle Chamber of Commerce, the "Pacific" theme was also added to emphasize the Oriental trade. The Exposition became known as the "A-Y-P" for short
Although the fair almost certainly could have been ready for 1907, it was postponed so as not to conflict with the Jamestown Exposition. This turned out to be good fortune for Seattle, because 1907 proved to be a bad year for the economy. If the exposition had been held that year it almost certainly would have been a financial failure, rather than the success it was in 1909.
Design and construction 
The Olmsted Brothers of Brookline, Massachusetts, were selected to plan the Exposition; the firm was already involved in planning parks and parkways for the City of Seattle. John C. Olmsted visited Seattle in October 1906 and saw the dominant form of Mount Rainier toward the southeast. He selected the mountain as the focus of the primary axis of the Exposition. This axis later became the Rainier Vista of the University of Washington campus.
The principal landscape architect for the fair was the Olmsted firm's James Frederick Dawson. His design centered on a long pool with a series of short waterfalls along Rainier Vista. John Galen Howard's firm, Howard and Galloway, based in San Francisco, was chosen as supervising architects for the Exposition buildings. They designed several buildings and supervised construction of those designed by other architects.
The fairgrounds were entirely ready for the June 1, 1909 opening.
The only foreign countries to erect entire buildings at the fair were Japan and Canada, but their presence was enough to validate the "Pacific" theme along with the US territory of Hawaii and the Philippines, recently ceded to the US by Spain. Other foreign countries were represented on a smaller scale. The very popular King County exhibit included a scale model of the coal mine at nearby Newcastle, Washington and dioramas of several Seattle scenes, the originals of which were only a trolley ride away. The Woman's Building emphasized the role of women in pioneering the American West and in current charity work. The Pay Streak was Seattle's answer to Chicago's Midway and featured games of chance and amusements. There was also a reenactment of the American Civil War naval Battle of Hampton Roads (the Battle of Monitor and Merrimack)
Display of Southern California fruits.
Opening Day, June 1, was declared a city holiday, and 80,000 people attended. Attendance was even higher—117,013—on "Seattle Day". Other big draws were days dedicated to various ethnic groups, fraternal organizations, and U.S. states. By the time the fair closed on October 16, over 3,700,000 had visited.
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The primary physical legacy of the Alaska–Yukon–Pacific Exposition is the planning framework from the fair which continues to shape the University of Washington campus. The Rainier Vista and Drumheller Fountain, the focus of the A-Y-P, are today the central focus of the Science Quadrangle of the university's overall plan.
Although most of the Exposition's buildings were designed as temporary structures, intended to last only for the duration of the fair, some were more permanent. The Fine Arts Palace was designed by Howard and Galloway as a chemistry building. It was used during the A-Y-P for the exhibit of art. After the Exposition was over, chemistry lab tables and other furnishings were moved in and it became the University's primary facility for teaching chemistry. The building was named "Bagley Hall" (after Daniel Bagley) and retained that name until 1937, when a new chemistry building named "Bagley Hall" opened. The older building then became the home of Architecture and Physiology. The building survives today, albeit with extensive renovation and restoration, and is known as Architecture Hall.
The A-Y-P Women's Building also survives. During the fair it housed exhibits related to women. Today the building is named Cunningham Hall (after Imogen Cunningham), one of only a few buildings on the University of Washington campus named for women. During the Exposition itself the building was clad in stucco; today it is faced in wood siding. The building now houses various educational and other programs related to women.
Other buildings from the A-Y-P survived for a time, but were subsequently demolished as the university grew. The Forestry Building was demolished mid-century after the natural logs of the structure proved difficult to maintain and few alternative uses for the structure were found. It stood on the site of the current Husky Union Building (HUB). The original Meany Hall, the AYP Auditorium Hall, was damaged by an earthquake in 1965 and subsequently demolished. Another example is the Hoo-Hoo-House, designed by architect Ellsworth Storey, a clubhouse with reception spaces constructed for the Hoo-Hoos, a lumbermen's fraternity. After the fair, this building served as the faculty club until it was replaced in 1958-60 by the current faculty club.
Another legacy of the fair was the enhanced status of exposition president J. E. Chilberg. Although a respected banker, Chilberg had never really been one of the city's elite. He was drafted into his position with the fair simply as a man who was known to be good at getting things done, but without consideration by the city's elite that they had just made an outsider into something tantamount to royalty for the duration of a social season. Suddenly, any party at their First Hill home became a major event in the social calendar. He and his wife found themselves dining with a close relative of the emperor of Japan and hosting a French ambassador.
Human Exhibits 
A month old orphaned boy named Ernest was raffled away as a prize. Although a winning ticket was drawn, nobody claimed the prize. The ultimate destiny of the child is still being investigated.
Other human exhibits included displays presenting Igorot people from the Philippines as dog-eating, primitive people, the "Alaskan Siberians — Eskimos" and a Chinese village depicting opium dens and recounting the recent Boxer Rebellion.
Premature babies were also displayed in French physician Alexandre Lion's incubators, decades before such systems were commonplace in hospitals. This display was not unique to the Alaska–Yukon–Pacific Exposition; babies had been displayed in incubators since the 1896 Berlin Exposition. Given the robustness of the infants seen in photographs, there is some question as to whether these infants actually required extra care or if they were simply used for profit. Particular to this exhibit was a Baby Incubator Cafe which is seen in some photos, although historians are unsure if this was an actual cafe or rather a place to view babies feeding. At the time there was little in the way of protest from either fair-goers or physicians. In fact there was already a seasonal incubator exhibit at Luna Park in West Seattle, the Infant Electrobator concession. The babies were mentioned by name in the newspaper during their stay at the exposition and their medical state followed throughout. A specific point of interest was the range in ethnicity of the infants. No deaths were experienced amongst the babies at the exhibit.
The year 2009 was the centennial of the Alaska–Yukon–Pacific Exposition. The City and University held various activities to celebrate this anniversary.
On July 4, 2009 a group of 12 cyclists set off from Santa Rosa, California on a 1,000 mile bike ride to Seattle, Washington to support the disease Histiocytosis. The ride, titled Wheels North, was a centennial of the 1909 adventure of Vic McDaniel and Ray Francisco who traveled on bicycles to the Exposition. The ride ended at the Drumheller Fountain, in the center of Frosh Pond on the campus of the University of Washington on July 16, 2009. Drumheller Fountain is one of the last known remnants from the 1909 fair.
See also 
- Jones 1972, pp. 305–306
- Jones 1972, pp. 306–307
- Jones 1972, p. 307
- "The Exposition: A Contemporary Report on the Alaska-Yukon-Pacific Exposition by Mateel Howe (1909)". Archived from the original on 29 June 2011. Retrieved 2011-07-19.
- Jones 1972, pp. 309–310, 314
- Jones 1972, p. 310
- Jones 1972, p. 311
- Jones 1972, pp. 311–312
- Jones 1972, p. 312
- Jones 1972, p. 313
- Jones 1972, pp. 313–314
- Jones 1972, pp. 315–316
- http://seattletimes.nwsource.com/html/localnews/2008774004_aype23m.html Memorable time when Seattle was "world of wonder" in 1909 retrieved 4 December 2010
- Findling and Pelle, Encyclopedia of World's Fairs and Expositions, 9780786434169 p203
- Becker, Paula (2009-02-07). "Alaska-Yukon-Pacific Exposition (1909): Baby Incubator Exhibit and Cafe". Historylink.org. Archived from the original on 29 June 2011. Retrieved 2011-07-19.
- Max Johl, The United States Postage Stamps of the Twentieth Century (Lindquist, 1937), vol. 1, pp. 315–319.
- Jones, Nard (1972), Seattle, Garden City, New York: Doubleday, ISBN 0-385-01875-4
|Wikimedia Commons has media related to: Alaska-Yukon-Pacific Exposition|
- "A-Y-P Exposition Community" Alaska–Yukon–Pacific Exposition Centennial for Washington State, 1909–2009
- University of Washington Libraries Digital Collections – Alaska-Yukon-Pacific Exposition Photographs 660 photographs of buildings, grounds, entertainment and exotic attractions.
- Glimpses of the Alaska-Yukon-Pacific exposition (1909); Digitized page images & text from the Library of Congress.
- A Review of the Resources and Industries of the State of Washington, 1909 at Project Gutenberg — published for the exposition.
- AYPE.com; An evolving, non-commercial project of image display and text.
- Alaska, Land of the Midnight Sun (Sheet Music written for the AYP) interactive hypermedia at the BinAural Collaborative Hypertext
- us1909.com; A comprehensive exhibition of postage stamps issued in 1909, including the Scott 370 & 371, Alaska-Seward issue.