Hamel (Minnesota) — August 11, 1948 (1200)
Two boys were playing outside when a round, dull gray object, 70 cm in diameter, 30 cm thick, landed near them like a balloon with a metallic noise. It spun, went up, hovered, maneuvered to avoid telephone lines and trees, and flew away to the northeast. An FBI man from St. Paul found an area 70 cm in diameter where the ground showed signs of extreme pressure. (Atic)
Source: Passport to Magonia
Case: 66