Scale 1:250,000. Title in lower right corner: Upper Chesapeake Bay, N3849W07649, 016-033, 1972. "Imagery recorded ... Oct. 11, 1972 ..." "Projection and 10,000-meter grid: Universal transverse Mercator, zone 18 More
Scale 1:500,000. Title in lower right corner: Upper Chesapeake Bay, N3849W07649, 1972. "Imagery recorded ... Oct. 11, 1972 ..." "Projection and 20,000 metre grid: Universal transverse Mercator ..." Covers Chesa More
Scale 1:500,000. Title in lower right corner: Chesapeake Bay and vicinity, 1977. "Projection based on the perspective images with 20,000-meter universal transverse Mercator fitted grid ..." "Experimental printi More