Browse by year

Timeline of the archive

Every declassified record on the site references one or more years. The chart below counts how many case files name each year, from 1945 to 2026, split by archive. The record clusters heavily in the 1950s and 1960s, when Project Blue Book was logging sightings across the country. Pick any year to read the files that name it.

10,540 records span 1945 to 2026. Peak year: 1957 (974 records).