1. City of Baltimore topographical survey / made under the direction of H.T. Douglas, chief engineer. Published / Created: 1896 Call Number: 777cbf B21 1894 Container / Volume: BRBL_00504 Image Count: 36 Resource Type: Maps, Atlases & Globes Description: "Contour interval 5 ft. Datum, mean low water at Baltimore." and Relief shown by contours, isolines, and pictorially. Publisher: Photo-Lith. by A. Hoen, Subject (Geographic): Baltimore (Md.)--Maps Subject (Name): A. Hoen & Co and Douglas, H. T Found in: Beinecke Rare Book and Manuscript Library > City of Baltimore topographical survey / made under the direction of H.T. Douglas, chief engineer.