Patapsco River and the approaches / from a trigonometrical survey under the direction of F.R. Hassler and A.D. Bache, Superintendents of the Survey of the Coast of the United States ; triangulation by J. Ferguson, assistant ; topography by F.H. Gerdes, R.D. Cutts, H.L. Whiting & J.B. Gluck, assists. ; hydrography by the parties under the command of Lieuts. G.M. Bache, C.H. McBlair & R. Wainwright, U.S.N. assists. ; redd. drng. by W.M.C. Fairfax, M.I. McClery and A. Palmstein ; engd by A. Rolle, A. Petersen and App. W.A. Thompson

Relief shown by hachures. Depths shown by shading and soundings. ; Includes sailing directions, notes, tidal information, and three profiles. ; "Electrotype copy no. 5 by G. Mathiot, U.S.C.S."--Upper right margin. ; View no. 1 Entrance to Baltimore Harbor from the main ship channel in 3 fms. -- View no. 2 (bis) looking S.W. entrance to baltimore Harbor by the Swash or Bodkin Channel in 3 fms. -- View no. 2 [sic] looking N.W. entrance to Baltimore Harbor by the Swash or Bodkin Channel in 3 fmsColor1:60,00