Baltimore and its neighborhood: an excursion map; compiled for the Johns Hopkins University; based upon the triangulation of the U.S. Coast and Geodetic Survey and published maps of local surveys; edited by Albert L. Webster; drawn by Louis Nell.
Nell, Louis.,Webster, Albert L.,U.S. Coast and Geodetic Survey.,Johns Hopkins University.
Depths shown by soundings and isolines. "Contours in water one fathom apart." 1 map: col., mounted on cloth; 60 x 60 cm This map is in the public domain. Please attribute access and use of this digitized map to the Stephen S. Clark Library, University of Michigan Library.