Documents / Report
This U.S. Air Force compilation, released by the U.S. Department of War, holds numbered checklists and survey sheets for flying object incidents 1 through 100. It covers sightings by officers, test pilots and civilians at Muroc Army Air Field on 7 and 8 July 1947, and sightings by Portland, Oregon police on 4 July 1947. It also includes fireballs seen over California, Nevada and Oregon on 30 December 1947, a Houston fireball, and Finnish reports from January 1948.
From the source:Release of 2026-06-12 Incident: United States. Includes a "Check-List - Unidentified Flying Objects" that contains details about the incident. Many summaries also include witness lists or statements and other narrative reports or descriptions.
“Anderson”4 pages
Read from the scan by GLM-OCR; expect the odd misread word.
Mrs Hedstrom was the first to notice an object traveling at a terrific speed in a northeasterly direction. While discussing this with her husband and a neighbor all three saw ten similar objects proceed rapidly in the same direction in the form of a triangle. As they were disappearing 3 objects peeled off the left flank and proceeded in a more northerly direction. The remaining objects closed ranks and proceeded on a NEX NE course. Five minutes later another group of 3 objects were seen proceeding in the same direction in triangular formation. Three to five minutes later another triangular formation of five or six objects was observed going in the same direction. Then a few minutes later the three witnesses saw 35 to 50 flying in a triangular formation still in the same direction. Approximately 20 to 25 minutes later similar objects were noted coming back over the city in a southwesterly direction. Generally they were in groups of 3, 5 and 7 and followed each other at approximately 5-minute intervals. Detective Frazier and Mr. Hedstrom did not think they were meteors as (1) they flew on a level line and did not appear to drop (2) Observed triangular formation They did not think they were birds as: (1) They were lighted from the inside. Were not the reflection of city lights since: (1) They observed triangular formation and changed course from NE to SW direction. (2) Observed to close ranks and form a triangle again.
Report, from the pursue collection. The PDF is mirrored here; the original link is above. The text was read from the page images by GLM-OCR; expect the odd misread word. 253 pages are in the text index: search them above, or from the library's search.