On the back of the photo Oakland Tribune caption - hand written "Broadway Tunnel". Also, a newspaper article stamped TR5C MAR 19, 1961 "Tribune aerial photo by Russ Reed from a plane flown by Warren Boggess of Pacific States Aviation - TRIBUNE ARTISTS, WORKING FROM STATE DRAWING, ILLUSTRATE CALDECOTT TUNNEL APROACH - View is of Oakland side. Eight-lame freeway will be built. Overcrossing at top will be for tunnel crews". The date stamped on the back of the photograph is Feb 27, 1961. Also, stamped on the back of the photograph is Russ Reed - Plane flown by Warren Boggess Pacific states Aviation, Concord.