sentences:  They became the Caterpillar Dieselettes in 1940, the Sunnyland Lettes in 1956, and the Pekin Lettes in 1959.In the late 1950s and early 1960s the Lettes average attendance-per-season was over 100,000, with thousands of spectators attending each game.The 1963 season averaged over 5,000 fans per game, setting a national ASA attendance record of 122,000 for 21 home games.