East Tucson (Arizona) — October 9, 1967 (1740)
A boy riding his bicycle saw an aluminum cylinder standing on end, 3 m high. 80 cm wide, supported by two legs ending in round pads joined by a bar. He got within 12 m of the object before it rose vertically with a deep, low-pitched hum, but no smoke, flame, or haze. It left two impressions. (Lor. Il] 119)
Source: Passport to Magonia
Case: 886