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Prior to 1966
- 6 March, 1933, Cleveland, Ohio: 6 injured, 6 killed, including shooter
- 15 November, 1948, Chester, Pennsylvania: 6 injured, 8 killed
- 6 September, 1949, Camden, New Jersey: 3 injured, 13 killed
- 15 Novemebr, 1959, Holcomb, Kansas: 0 injured, 4 killed
- 25 April, 1965, U.S. Route Highway 101: 10 injured, 4 killed, including shooter