And more on the fair...

http://stlouis.missouri.org/citygov/parks/forestpark/history/fair.html

-consisted of 900 distinct buildings
-twenty-two countries were represented including Japan, China, the Philippines Ceylon
-44 U.S. cities, states, and territories built large display buildings
-the federal government built a bird cage large enough for enough birds to fly freely
-fairgoers saw exhibits ranging from a cow made entirely out of butter to their first look at automobiles and electric lights
-the task of razing buildings and restoring the park for use was until April 30, 1913