Multiple sources detail investigations into unexplained aerial phenomena, primarily in the New Mexico area, during the late 1940s and early 1950s. These documents comprise reports and summaries of sightings, including descriptions of objects, witness testimonies, and analyses of the events. The reports involve various government agencies and experts, who attempted to explain the phenomena. Several reports focus on "green fireballs," while others discuss disc-shaped objects and their characteristics. The documents also include related correspondence and investigations into various reports of unusual sightings.