Folder: S.F. Wars-World War II-Gas Attack Preparation
Written on back: "SAN FRANCISCO'S LATEST AIR RAID TEST--San Francisco, Calif.--San Francisco's civilian defense workers ran the gamut of air dangers from unexplorer bombs and poison gas to medical treatment for the injured--but it was not real. It was just a test to keep the defense workers in trim for the real things, should it come. Shown here are some of the scenes during the test. PHOTO #1 SHOWS air raid warden Howard North, gas mask, tin hat, and all, whirling the big 'clacker', generally used for New Year's Eve celebrations, but now used in case of a gas attack."