Peruvian Customs Inspector Photographs Large UFO, Puerto Maldonado, Peru, 19 July 1952, 4:30 p.m.

The low-flying, cylindrical shaped UFO was photographed by Domingo Troncoso, who worked as a Customs Inspector with the Peruvian Customs Office at Puerto Maldonado on the jungle frontier with Bolivia.

UFO Casebook.com article:

http://www.ufocasebook.com/peru1952.html

(gstatic.com images)