The Philadelphia Experiment Connection

Morris K. Jessup was an astronomer and author who wrote The Case for the UFO (1955) — one of the earliest serious books arguing that UFOs represented a genuine and important phenomenon. The book attracted an unusual response: an annotated copy was sent to the Office of Naval Research with marginal notes by an individual calling himself "Carlos Allende," describing a secret naval experiment in Philadelphia in 1943 involving the invisibility and teleportation of a naval vessel.

The ONR took the annotated copy sufficiently seriously to have it mimeographed and distributed within the Navy. Jessup became interested in the "Philadelphia Experiment" claims and was reportedly researching them at the time of his death.

A Suspicious Death

Jessup was found dead in his car in Dade County, Florida, in April 1959, in what was ruled a suicide. The timing — as he was actively researching sensitive naval topics — has led researchers to question the official conclusion. Whether his death was connected to his research remains unknown. He is remembered as one of the early serious thinkers who tried to apply scientific reasoning to UAP before the modern era of investigation.