USAF · 1947 to 1969

Project Blue Book Case Files

The U.S. Air Force's 22-year investigation into reported UFO incidents, drawn from the National Archives. Each case below has a journalistic summary written from the original file. Use the search box to find a place or date, or filter by state and year.

StateOH 371 CA 274 TX 242 NY 167 FL 110 NM 92 MI 90 WA 89 IL 81 PA 78 MD 73 CO 72

Year1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969

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4 cases in PA from 1952 · page 1 of 1

Bellefonte, PA
1952 · unidentified
On the night of September 14, 1952, two security officers on duty at the west gate of Olmsted Air Force Base near Bellefonte, Pennsylvania saw an object that the U.S. Air Force wou…
Benton, PA
1952 · unidentified
On April 19, 1952, at 10:50 a.m. local time, radar operators at an air traffic control station near Benton, Pennsylvania, detected three unidentified objects on radar. The targets…
PITTSBURGH, PA
1952 · unidentified
On February 11, 1952, between about 0300 and 0315 (3:00 to 3:15 a.m.) Eastern time, two Air Force officers flying a T-11 aircraft from Cleveland, Ohio, to Langley Air Force Base, V…
Report From OLMSTEAD AFB, PA
1952 · unidentified
On May 1, 1952, near Olmstead Air Force Base in Pennsylvania, an ex-pilot reported sighting an unidentified flying object. The object appeared red on approach and white when recedi…

Browse sightings by state

Browse sightings by year

1947 51 1948 90 1949 236 1950 167 1951 124 1952 471 1953 326 1954 350 1955 344 1956 417 1957 559 1958 359 1959 268 1960 340 1961 408 1962 346 1963 123

Bellefonte, PA

Benton, PA

PITTSBURGH, PA

Report From OLMSTEAD AFB, PA