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APRO Bulletin

Aerial Phenomena Research Organization

United States
Country
1952 to 1988
Published
258
Issues Indexed
1,105
Articles Catalogued

History

The Aerial Phenomena Research Organization was founded in January 1952 by Jim and Coral Lorenzen in Sturgeon Bay, Wisconsin. It was one of the first civilian UFO research organisations in the world, predating both NICAP (1956) and MUFON (1969) by years. For three decades it operated alongside NICAP as one of the two major American UFO research groups, though the two organisations took markedly different approaches to the phenomenon.

Where NICAP lobbied Washington and cultivated military contacts, APRO built an international field investigation network. Coral Lorenzen, who grew up in the American Southwest and had a personal sighting as a nine-year-old child in 1934, recognised early that the phenomenon was global. She built a network of correspondents and field investigators across South America, particularly in Brazil and Argentina, where some of the most dramatic close encounter cases of the 1950s and 1960s were being reported. No other American organisation had this reach.

APRO's international network documented dozens of South American cases that received no coverage in the English-speaking press, many involving physical effects, occupant encounters, and multiple witnesses. NHI Archive editorial assessment

The APRO Bulletin ran continuously from 1952 until the organisation's dissolution in 1988, following Jim Lorenzen's death in 1986 and Coral's in 1988. The Bulletin published field investigation reports, case analyses, scientific commentary, and editorial analysis across its 36-year run. Its tone was scientific but not rigid: the Lorenzens were willing to investigate cases involving occupant encounters and physiological effects that more conservative organisations dismissed.

Scientific Advisory Board
APRO maintained a Scientific Advisory Board that included Dr. James E. McDonald, atmospheric physicist at the University of Arizona and one of the most effective scientific advocates for UFO research; Dr. R. Leo Sprinkle, a psychologist who investigated abduction cases; and Dr. J. Allen Hynek, who served as a consultant to APRO while simultaneously advising Project Blue Book.

The Lorenzens were prolific authors, publishing several books that drew on APRO's case files. Their work on the Antonio Villas-Boas abduction case (Brazil, 1957) and the extensive Brazilian flap of 1957 to 1958 introduced English-speaking readers to cases that remain significant in the research literature. APRO's Tucson, Arizona headquarters became a clearinghouse for international case data that no other organisation was collecting.

Significance

APRO's early start date means its archives contain field investigation data from the first decade of the modern UFO era. The 1952 Washington D.C. Wave, the 1957 Levelland sightings, the Trindade Island photographs: APRO documented these cases as they happened, with field investigators on the ground within days. No other civilian organisation was operational early enough to capture this period with such immediacy.

Nobody else was systematically covering South America. Brazilian cases like Colares Island (1977), the Ubatuba magnesium fragment, and dozens of occupant encounters from Argentina and Chile were documented by APRO's network at a time when no other English-language publication was paying attention. These cases are now recognised as some of the strongest in the historical record, and APRO's Bulletin is often the primary English-language source.

From the Archive
The NHI Archive holds 258 issues of the APRO Bulletin spanning the organisation's full 36-year history. Twelve issues from 1968 and 1969 have been deep read page by page, with every sighting report extracted to the Sightings Database and Sightings Map. Browse the extracted issues below.
APRO Microfilm Collection
The archive also holds APRO Microfilm Reel 1: 2,594 frames across 13 parts, covering historical case reports compiled by APRO from 1558 through the 1950s. Digitised by Steve Kaesar. Available in the Government Reading Room.

Browse Articles

1,105 articles catalogued, grouped by issue

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