August 4, 1947 — btw. Bedford and Everett, MA
4:00 p.m. Pan American Airlines pilot Alpheas D. Powell and navigator Walter I. White are flying between Bedford and Everett, Massachusetts, when they see a bright orange or deep-gold-colored elliptical object, 15 feet long and 2–3 feet wide, flying at more than 150 mph at 7,000 feet altitude. [Eberhart]
Sources:
NICAP, “Pan Am Airliner Encounters Elliptical Object”;
Brad Sparks, Blue Books Unknowns Catalogue, Case 43, p. 25;
[PURSUE release, pp. 159–160;]
https://www.war.gov/medialink/ufo/release_1/38_143685_box7_incident_summaries_1-100.pdf
[PURSUE release, pp. 1–4;]
https://www.war.gov/medialink/ufo/release_1/65_hs1-834228961_62-hq-83894_serial_130.pdf
[PURSUE release, pp. 202–203;]
