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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3 cases in CO from 1952 · page 1 of 1

CAMP CARSON, CO
1952 · unidentified
On December 24, 1952, at 5:17 a.m., observers at Camp Carson, Colorado, sighted a silvery unidentified flying object. The object appeared circular, about the size of a baseball, an…
COLORADO SPRINGS, CO
1952 · unidentified
On December 11, 1952, an Air Force sergeant and a civilian observed a round, aluminum-colored object flying from east to west near Colorado Springs, Colorado. The object appeared t…
Denver, CO
1952 · unidentified
On September 24, 1952, Technical Sergeant Billy Ross Hughes saw five or six circular objects wheeling through the sky over Aurora, Colorado, just north of Stapleton Airport. The ti…

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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

CAMP CARSON, CO

COLORADO SPRINGS, CO

Denver, CO