Mr. Dulles. Mr. Cadigan, I thank you very much for your most interesting and helpful testimony.
(Whereupon, at 1:50 p.m., the President's Commission recessed.)
(Following is the text of a letter relating to the fiber composition of the gummed tapes in Exhibits 142 and 677.)
United States Department of Justice,
Federal Bureau of Investigation,
Washington, D.C., April 8, 1964.
[By Courier Service].
Hon. J. Lee Rankin,
General Counsel, the President's Commission, 200 Maryland Avenue NE., Washington, D.C.
Dear Mr. Rankin: During the testimony of Special Agent James C. Cadigan on April 3, 1964, before the President's Commission, Mr. Melvin Eisenberg of your staff orally requested Special Agent Cadigan to make a fiber analysis of the gummed tape on the paper sack found on the sixth floor of the Texas School Book Depository Building, Commission Exhibit 142, and of the sample of gummed tape in Commission Exhibit 677 Obtained November 22, 1963, at the Texas School Book Depository Building.
Fiber analysis of the two gummed tapes in Commission Exhibits 142 and 677 revealed that they were similar in fiber composition.
Sincerely yours,
J. Edgar Hoover.