UFO Survey: “THE MYSTERY OF UNIDENTIFIED FLYING OBJECTS - A PRELUDE - 1896-1949”

By Loren E. Gross, September 1971 (revised: July 1973)

(J. Allen Hynek Center for UFO Studies, Northfield, Illinois)

http://www.cufos.org/UFO_History_Gross/1896-1949_The%20MysteryOfUnidentifiedFlyingObjects.pdf

(wikimedia.org image)

UFO News Articles: Articles On the 1896 Airship Mystery

Source: CUFOS.org

CUFOS.org presents several (December 1896) The Call (San Francisco, California) articles and one Press and Horticulturist (Riverside, California) article.

http://www.cufos.org/cases/1896_00_00_US_MX_NwsC_airshipsc.pdf

Mystery airship illustrated in The Call (San Francisco, California),

19 November 1896 (wikimedia.org image)