◆ SpookStack

ay toe : FD-36 (Rev. 12-13-56) . . Oo FBI "Date: Transmit the following in 4 (Type in plain text or code) (Priority of Method of Mailing? H SF File 76-2887 relates to replica of ventilator grills made by convicts to keep guards from discovering holes they had dug in wall leading from cellblock into utility corridor. shows pictures of two pad Sy one recovered in the prison which belonged to innate li ho did not escape and the 7 other recovered off the sho: of Angel Island in San Francisco Bay. shows full-length views of prisoners' raincoats similar to those cut up to make life rafts and "Mae West" Jackets. Pictures also show a life raft which was left at the prison and not used as being impractical. shows miscellaneous tools recovered by FBI which had been in possession of escaping inmates. Photographs also show periscope used by inmates to watch for guards. consists of photographs of three different magazine articles recovered by FBI from prisoners’ cells. These articles all relate to the making of life jackets and rafts. All of the movable items represented in the pictures are in the possession of the San Francisco Division of the FBI and are being held as evidence in connection with the investigation of the escape. Approved; ——__ Sent MOP Special Agent in Charge