The Report on Unidentified Flying Objects
The Report on Unidentified Flying Objects is a 1956 book by then-retired Air Force UFO investigator Edward J. Ruppelt, detailing his experience running Project Blue Book. The book was noted for its suggestion that a few UFO sightings might be linked to spikes of atomic radiation.
Source: Wikipedia — The Report on Unidentified Flying Objects (CC BY-SA 4.0)