# U.S. Air Force, Project Blue Book 1947: Danforth, Illinois – August 1947 (Project Blue Book case file) > U.S. Air Force, Project Blue Book, 1947. 8 records on Mysteries Department cite it. Six-page Blue Book folder. Its Project 10073 record card gives the… Source: https://mysteriesdept.com/sources/SRC0DFY3MX2ZGRA/danforth-illinois-august-1947-project-blue-book-case-file Publisher: Mysteries Department Licence: CC BY 4.0 (credit Mysteries Department and link the page) --- [Sources](https://mysteriesdept.com/sources)[Incident 88: the Hackensack disc, 3 August 1947](https://mysteriesdept.com/mysteries/incident-88)U.S. Air Force, Project Blue Book 1947 **0** # Danforth, Illinois – August 1947 (Project Blue Book case file) U.S. Air Force, Project Blue Book, 1947. **Incident 88: the Hackensack disc, 3 August 1947** Manuscript0 ## What it's used for here Six-page Blue Book folder. Its Project 10073 record card gives the conclusion 'Hoax': an instrument a farmer said landed on his land near Danforth and burned the weeds around it. Holds the original of the Air Materiel Command letter of 25 August 1947 signed by Col. H. M. McCoy to the Commanding General, Army Air Forces (attn. Lt. Col. George Garrett): the specimens, obtained by the FBI, were a plaster-of-paris body with resistance wire, a 1910-patent Nathaniel Baldwin speaker diaphragm, rewound bakelite coil forms and a Polymet filter condenser, had 'no connection whatsoever with the \"Mogul\" project', and were 'part of a hoax'. A copy of the same letter and photograph sits in the Incident 88 folder. ## Cited by on this site 8 records [AMC letter of 25 August 1947 on the Danforth 'flying saucer' specimens](https://mysteriesdept.com/mysteries/incident-88/artifacts/ART0DFY6R7641PS/amc-letter-of-25-august-1947-on-the-danforth-flying-saucer) ART [Photograph of the Danforth 'flying saucer' specimens](https://mysteriesdept.com/mysteries/incident-88/artifacts/ART0DFY6RMCKMMJ/photograph-of-the-danforth-flying-saucer-specimens) ART [Nothing in the three files refers to the others](https://mysteriesdept.com/mysteries/incident-88/evidence/EVD0DFY7XJN4QW7/nothing-in-the-three-files-refers-to-the-others) Evidence EVD [The Danforth letter in the 88 folder is a copy of one in the Danforth folder](https://mysteriesdept.com/mysteries/incident-88/evidence/EVD0DFY7X94J1BP/the-danforth-letter-in-the-88-folder-is-a-copy-of-one-in-the) Evidence EVD [Air Materiel Command calls the Danforth 'saucer' specimens a hoax unconnected with Mogul](https://mysteriesdept.com/mysteries/incident-88/events/EVT0DFY6BTTX8GF/air-materiel-command-calls-the-danforth-saucer-specimens-a) EVT [Col. H. M. McCoy](https://mysteriesdept.com/mysteries/incident-88/people/FIG0DFY5Y3KZPQK/col-h-m-mccoy) FIG [Incident 88: the Hackensack disc, 3 August 1947](https://mysteriesdept.com/mysteries/incident-88) The mystery article MYS [Danforth, Illinois](https://mysteriesdept.com/mysteries/incident-88/places/PLC0DFY5MDWDZ3M/danforth-illinois) PLC ## Cite it ``` U.S. Air Force, Project Blue Book (1947). Danforth, Illinois – August 1947 (Project Blue Book case file). https://archive.org/download/ProjectBlueBook_1940s_case_files/1947-08-9669372-Danforth-Illinois.pdf ``` [Find it at archive.org](https://archive.org/download/ProjectBlueBook_1940s_case_files/1947-08-9669372-Danforth-Illinois.pdf) Key **SRC** 0DFY3MX2ZGRA Kind Manuscript Rights The publisher's Kept 3 Nov 2026, for editors Added by [apollo](https://mysteriesdept.com/u/apollo) The record Bibliographic records are CC0. Take this one as CSL-JSON, BibTeX or RIS. [CSL-JSON](https://mysteriesdept.com/sources/SRC0DFY3MX2ZGRA/danforth-illinois-august-1947-project-blue-book-case-file/csl.json)