History
Project Blue Book: 12,618 Reports
The Air Force's UFO desk ran from 1947 to 1969. Its filing cabinet is the backbone of this archive — and its own summary numbers are the most quoted statistics in the subject.
Program · 1948–1949
Project Sign
The first formal Air Force UFO study, predecessor to Grudge and Blue Book.
Discussed in
1Named in these records
1| Title | Level | Objects | Record |
|---|---|---|---|
| Project "BLUE BOOK" | series | 0 | 542184 |