The following Project Blue Book case file was a 17 January 1969 sighting over the Yuma Test Station in Yuma, Arizona. Document Archive Project Blue Book: Yuma Test Station, Yuma, Arizona — 17 April 1952 [29 Pages, 4.5MB] Loading... Taking too long? Reload document| Open in new tab Download [4.58 MB] codepeople-post-map require JavaScript Follow The Black Vault on Social Media: Share on FacebookTweetSave