Besides pavilions built with stone quarried in the Black Hills, pyramids constructed of tin and gold ores, and 14-foot-high arches made of cornstalks, South Dakota's presence at the 1893 World's Columbian Exposition in Chicago included supersized registration books, like the one shown here dwarfing an infant. Measuring 17 inches thick, 25 inches high, and 26 inches wide, the tomes — each required the hide of an entire cow to bind — recorded the names of about 180,000 visitors. Despite South Dakota's ongoing drought and depression, its pavilions helped draw more than 2,000 new residents to the state.