1-805-32-VAULT
contact@theblackvault.com
1-805-32-VAULT
contact@theblackvault.com
This site was created by The Black Vault to house 129,491 pages, comprising of more than 10,000 cases of the Project Blue Book, Project Sign and Project Grudge files declassifed. Project Blue Book (along with Sign and Grudge) was the name that was given to the official investigation by the United States military to determine what the Unidentified Flying Object (UFO) phenomena was. It lasted from 1947 - 1969. Below you will find the case files compiled for research, and available free to download.
1940s
Project Sign was an official U.S. government study of unidentified flying objects (UFOs) undertaken by the United States Air Force and active for most of 1948. Project Grudge was a short-lived project that succeeded Project Sign in February, 1949, and was then followed by Project Blue Book. The project formally ended in December 1949, but continued in a minimal capacity until late 1951.
1950s
Project Blue Book was one of a series of systematic studies of unidentified flying objects (UFOs) conducted by the United States Air Force. It started in 1952, and it was the third study of its kind.
Project Blue Book had two goals: 1) To determine if UFOs were a threat to national security, 2) and To scientifically analyze UFO-related data.
1960s
By the time Project Blue Book ended, it had collected 12,618 UFO reports. The decision to discontinue UFO investigations was based on an evaluation of a report prepared by the University of Colorado entitled, "Scientific Study of Unidentified Flying Objects;" a review of the University of Colorado's report by the National Academy of Sciences; previous UFO studies and Air Force experience investigating UFO reports during 1940 to 1969.
Undated
There were additional case files in the Project Blue Book archives that were either not dated, or the date was unreadable. This section categorizes those records by their case number, and location, but lacks a date the sighting took place.
Credits / Notes
- Original data compilation using FootnoteReaper by user "Xtraeme"
- Data conversion by The Black Vault
- Web Design & Hosting by The Black Vault
- There is a bug on some larger .pdf files, wherein the pages may appear slightly out of order. This is due to the conversion process not handling the numbered files properly. This is being worked on, but please note, you will find all jpegs in number order for reference. I apologize for the oversight and inconvenience.
Search
The Black Vault completed a very lengthy and time consuming conversion of all 140,000+ pages into searchable .pdf files. If you would like to search them by keyword, this is the place, but please read the search notes on the next page...
