Seen here are Washington Huskies fans, victims of the old flip-card switcheroo, at this bowl game in 1961
[DOC] [TLE] The Great Rose Bowl Hoax - The Biggest Pranks in Geek History ... [PAR] Sep 8, 2008 ... Spectators at the 1961 Rose Bowl game between the Minnesota Golden 
Gophers and the Washington Huskies received instructions: at halftime, those on 
the Washington side should take colored flip-cards.