CSI Bulletin #20, July 1957

This document is a compilation of UFO and UAP sighting reports published in the CSI Bulletin #20, dated July 25, 1957. It serves as a record of various aerial phenomena observed throughout May 1957 across the United States. The bulletin includes a Project 10073 record card for a sighting in Terre Haute, Indiana, on May 31, 1957, where a basketball-sized, light-orange object was observed. Other reports detail a jet scramble over the Atlantic on May 11, 1957, involving military planes investigating radar contacts of three 'bogies' near Cape Cod. Another entry describes an 'aerial ballet' over Cincinnati on May 24, 1957, where a silvery, spherical object was observed maneuvering near four jets. The document also contains a detailed account from Julia Meaker regarding a brilliant green fireball observed in Washington, New Jersey, on May 29, 1957, which exploded silently. Additionally, the bulletin documents a physical trace case in Caldwell, New Jersey, where a witness, Herbert Andrews, discovered material that had burned a hole in a concrete curb after an explosion-like sound. The bulletin also covers reports from Knoxville, Tennessee, and Greenwich, Connecticut, as well as a report of a cigar-shaped object over Mount Vernon, New York, on May 7, 1957. The document highlights the confusion surrounding 'mystery jets' over Manhattan, which were later attributed to military activity, though the bulletin notes that official sources often denied UFO activity despite reports. The compilation reflects the civilian interest in documenting these events and the frequent intersection of civilian sightings with military air defense activities during this period.