Browsing Baltimore City Sheet Maps by Author "Hilgard, J.E."
Baltimore Harbor and Part of Patapsco River Incl. Ridgley’s Cove, Maryland, From the Survey made in 1845 Hilgard, J.E. (Washington: U.S. Coast Survey, 1845)Scale 1:10,000. Copied from the original in Archies of the U.S. Coast Survey. Carlile P. Patterson, Supdt. J.E. Hilgard, Assistant Coast Survey, in charge of office. Washington, DC, Dec. 27th 1877.