Thompson, A. G., active 1855, cartographer. manuscriptcartographic Manuscript maps. lcgft Nautical charts. lcgft eng Depths shown by soundings. North oriented towards the upper right. Pen-and-ink. U.S.C. & G. Survey library and archives stamp and manuscript "85/1855" on blue-bordered adhesive label in lower right corner. Fire Island Inlet (N.Y.)--Maps. United States New York (State) Fire Island Inlet. Available also through the Library of Congress Web site as a raster image. https://hdl.loc.gov/loc.gmd/g3802f.ct005532