APRO Bulletin
Aerial Phenomena Research Organization
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.
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.
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.
Browse Deep Read Issues
Each issue below has been deep read page by page. Every sighting report has been extracted with full structured data and added to the Sightings Database and Sightings Map.
1968
1969
172 sightings extracted across 12 issues. More issues will be added as the deep reading programme continues.
Browse Articles
1,105 articles catalogued, grouped by issue