Apollo, Armstrong County, Pennsylvania, Apr. 1909. 1 map on 6 sheets : col. ; on sheets 64 x 54 cm.; Partial cadastral map. Title from sheet 1. Oriented with north to the upper right with some sheets on the horizontal. April 1909."" ""Copyright, 1909 by the Sanborn Map Company."" Includes key, streets and specials index, and text."". Scale approximately 1:600. 50 ft. to an in.