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This US Air Force Project Blue Book case file on Kenneth Arnold's sighting of nine objects near Mount Rainier, Washington, on 24 June 1947 was released through The Black Vault. It contains the Project 10073 record card, which concludes the objects were a mirage, plus Arnold's telegram, questionnaire data and interview notes. It also includes J. Allen Hynek's analysis arguing the objects were closer and slower than Arnold estimated. Other items are David Johnson's sworn statement on a Boise sighting, a Tacoma investigation telegram and news clippings.
“formation”10 pages
PROJECT 10073 RECORD 1. DATE-TIME GROUP 24 Jun 47 2. LOCATION Mt. Rainer, Washington 3. SOURCE Civilian 10. CONCLUSION Other (KIRAGE) 4. NUMBER OF OBJECTS Nine 5. LENGTH OF OBSERVATION 2 1/2-3 minutes 11. BRIEF SUMMARY AND ANALYSIS Observer sighted a large circular objects heading west. They appeared as mirror-like reflections which dipped and twisted at a very high rate of speed. Skerrick were made. 6. TYPE OF OBSERVATION Air-Visual 7. COURSE West 8. PHOTOS Yes No 9. PHYSICAL EVIDENCE Yes No FTD SEP 63 0-329 (TDE) Previous editions of this form may be used.
Document, cited by the archive. The PDF is mirrored here; the original link is under it. The text was read from the page images by an OCR model; expect the odd misread word. 62 pages are in the text index: search them above, or from the library's search.