Carl Allen

Carl Allen says in late 1956 the experiments were discontinued {6}

Carl Allen’s Letters

Carl Allen’s second (third) letter received by Mr. Jessup {1,9}

Carl Allen’s Letters

Carl Allen’s first (second) letter received by Mr. Jessup {1,9}

The Case for the UFO’s

An annotated version of Mr. Jessup’s book “The Case for the UFO’s” was mailed to the Office of Naval Research, with a mysterious “HAPPY EASTER” written on the envelope. {9}

The Case for the UFO

Mr. Jessup’s fist book “The Case for the UFO” was published on April 4th, 1955.