A.P.R.O. SPECIAL REPORT NO. 1: The Barra Da Tijuca Disc

This special report, published by the Aerial Phenomena Research Organization (A.P.R.O.) in October 1961, details the investigation into the 'Barra da Tijuca Disc' sighting that occurred on May 7, 1952, in Brazil. The report, authored by Dr. Olavo T. Fontes, M.D., presents the case as a 'classic' in UAO (Unidentified Aerial Object) history. The sighting involved press photographer Ed Keffel and reporter Joao Martins, who captured five photographs of a disc-shaped object while working for 'O CRUZEIRO' magazine. The report asserts that the Brazilian Air Force conducted a rigorous scientific investigation into the incident, including the use of photogrammetry and analysis of the negatives, and ultimately concluded that the photographs were authentic. Dr. Fontes addresses and refutes claims that the incident was a hoax involving a thrown wooden disc, noting that the Brazilian Air Force itself attempted to reproduce the photographs using such a model but failed to achieve the same results. The report includes detailed diagrams and analysis of the object's flight path, altitude, and distance, as well as a discussion regarding the U.S. Air Force's public dismissal of the photos based on shadow analysis, which Fontes attributes to a misunderstanding of the specific environmental conditions at the site. The document serves as a compilation of evidence, including reports from researcher Fernando Cleto and official Brazilian Air Force documentation, to argue that the Barra da Tijuca incident provides absolute photographic evidence of intelligently controlled aerial vehicles.