Title: World of fairs
Subjects: History, Trade shows, Exhibitions, Exhibitions--history, Exhibitions--united states--history--20th century, Exhibitions--history--20th century, Trade shows--history, Trade shows--united states--history--20th century, Trade shows--history--20th century, T395.5.u6 r94 1993, 973.9/074
Places: United States
Time periods: 20th century