This collection includes correspondence, articles, newsclippings, photographs, and recordings, concerning Menzel's 
documentation of UFOs as natural phenomena explainable in scientific terms. One can find material on the National Investigation Committee on Aerial Phenomena, Project Blue Book, the Velikovsky controversy, and a card file of meteor activity, 1946-1961.
Provenance
Presented by Donald Howard 
Menzel and family, 1963-1982; accessioned, 10/--/1971. See in-house shelf list for additional accession numbers and dates.
Related material
Donald Howard Menzel's Autobiography is also located in the American Philosophical Society Library (Mss.B.M522).
Corporate Name(s)
- National Investigations Committee on Aerial Phenomena.
- Project Blue Book (U.S.)
Genre(s)
- Card files.
- Clippings.
- Photoprints.
- Recordings.
Personal Name(s)
- Botley, Cicely Mary
- Boyd, Lyle Gifford, 1907-
- Condon, Edward Uhler, 1902-1974
- Hynek, J. Allen, (Joseph Allen), 1910-1986
- Keyhoe, Donald E., (Donald Edward), 1897-
- Klass, Philip J.
- Maney, Charles Albert, 1891-
- Markowitz, William
- Menzel , Donald Howard, 1901-1976
- Quintanella, Hector
- Sagan, Carl, 1934-1996
- Schreibsten, Norman
- Velikovsky, Immanuel, 1895-1979
- Wellman, Wade
Subject(s)
- Astronomy.
- Meteors.
- Unidentified flying objects.
American Philosophical Society 105 South Fifth Street Philadelphia, PA, 19106 215-440-3400 manuscripts@amphilsoc.org