July 29, 1947 — Canyon Ferry, MT
12:05 p.m. Robert J. Madden, Steve Herrmann, and Karl Herrmann see a thin object, apparently 3 feet in diameter, that hovers and flutters above Canyon Ferry, Montana (20 miles east of Helena), rising and descending. It heads northeast at tremendous speed at about 3,000 feet. [Eberhart]
Sources:
NICAP, “3′ Bright Disc Maneuvers at High Speed”;
Brad Sparks, Blue Books Unknowns Catalogue, Case 41, p. 25;
[PURSUE release, pp. 137–138;]
https://www.war.gov/medialink/ufo/release_1/38_143685_box7_incident_summaries_1-100.pdf’
[PURSUE release, pp. 74–76, 173–175;]
https://www.war.gov/medialink/ufo/release_1/65_hs1-834228961_62-hq-83894_section_3.pdf
[PURSUE release, pp. 182–183];










