Date from ancillary map: "based upon 1926 official census ..."; Includes chart comparing routes and ancillary map: Traffic density chart.; On verso: [General view of the San Francisco Bay area and the Sacramento and San Joaquin Valleys]. 19 x 20 centimeters, on sheet 36 x 43 centimeters, folded to 36 x 22 centimeters Scale not given. City Maps
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