1. 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. Maps University Of Michigan Public content 1884. Johns Hopkins University, Nell, Louis, U.S. Coast and Geodetic Survey, and Webster, Albert L. Depths shown by soundings and isolines. "Contours in water one fathom apart." 1 map: col., mounted on cloth; 60 x 60 cm.