King County (Wash.), Property Dept. [s.n.
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Port of Seattle. presented with compliments, Port of Seattle Commission. Depths shown by soundings in fathoms. "Issued by Port of Seattle"--Panel. Text and data abo... The Port.
Plummer, Fred G. (Fred Gordon), 1864-1913. compiled by Fred G. Plummer, c.e. Allen C. Mason,.
Relief shown by contours. Depths shown by gradient tints and soundings. United States Coast and Geodetic Survey.
Relief shown by contours; contour interval 20 ft. Depths shown by isolines and soundings. "No. 6399.". U.S. Coast and Geodetic Survey.