[Ships on the Delaware River, South Philadelphia, Philadelphia.] [graphic]. Aero Service Corporation, photographer. Piers & wharves -- Pennsylvania -- Philadelphia. Rivers -- Pennsylvania -- Philadelphia. Waterfronts -- Pennsylvania -- Philadelphia. Vessels. Aerial views of ships on the Delaware River with piers and industrial buildings along the riverfront in the vicinity of Oregon and Delaware Avenues visible behind. The city skyline is visible in the distance. Negative numbers: 25663n. Manuscript note on negative sleeve: Waterfront, Phila, Pa. PA. Philadelphia. 1941 1941 Nitrate negatives -- 1940-1950. Aerial photographs -- 1940-1950. 1 negative : nitrate ; 21 x 25 cm. (8 x 10 in.) digitool:62306 Library Company of Philadelphia PRINT PRINT Aero Service [P.8990.25663n] P.8990.25663n Delaware River (N.Y.-Del. and N.J.) South Philadelphia (Philadelphia, Pa.) Delaware Avenue (Philadelphia, Pa.) -- 2700 block -- South. Oregon Avenue (Philadelphia, Pa.) -- East.