Perego, Alberto. L'aviazione di altri pi?.neti opera tra noi. Rome, Edizioni
del Centro Italiano studi aviazione el6~~-·o'llagnetica, 1963. 563 p.
Report on worldwide UFO sightings between Hi43-1963 with emphasis on those
ove1· Italy.
----- The Monguzzi case. basle, 1965] . 2 p.
English translation by Lou Zinsstag of pertinent section of Perego' :i 8velato il
mistero dei dischi volanti (RomP., Edizioni del C. I. S. A. E. R., 1957). -
Plenty going on in the skies. U, S. news & world report, v. :!6, Jan. l, 1954:
27-28.
Excerpts from text of USAF report on its investigation or unidentified flying
objects during 1952.
The Project A report. Ada, Ohio, Ohio Nothem University, 1953. 9 p.
Scientific analysis of unidentified flying objects reported in the year 1952.
Conducted by the faculty and staff of Ohio Northern University, Ada, Ohio.
Reports from everywhere. Fate, v. 7, May 1954: 23-31.
Rt.ports on worldwide s;.ghtings of UF ..; June-December 1953.
Ribera, Antonio. El gran enigma de los platillos volantes, desde la prehistoria
hasta la epoca. actual. Santiago de Chile, Buenos Aires, Mexico, Barcelona,
Editorial Pomaire, 1966. 431 p.
Author sur.-:marizes worldwide reports of unexplained aerial phenomena
(1800s-196Us)with emphasis of U. S. accounts r.nd .:m the 1954 wave of UFO
sightings in France. Current theories <'n the possibility of life in other
worlds are discussed. Hypotheses attempting to explain the UFO phenomenon
are surveyed.
----- Objetos desconocidos en el cielo. Barcelona, Libraria Editorial Argos,
1961. 289 p. (Documenta)
Repo1·ts major UFO sightings throughout the world from 1947, !'eviews some
of the literature on the subject, and summarizes theories currently proposed
to explain the UFO phenomenon.
Roberts, August C. The Skywatch 'l'ower case. Flying saucers from other worlds,
Aug. 1957: 8-15.
Details of UFO sighting on July 28, 1952, from Civilian Defense Skywatch
Tower, New York City, ~nd photographing of object.
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