| No Date Map Showing Baltimore County and Harford County. Manuscript, 46 x 60 cm. (colored) | George Peabody Library |
| No Date Map of a Portion of Baltimore County, Maryland. 60 x 30 cm | George Peabody Library |
| 1785 Baker, James. Lord Baltimore Gunpowder Manor. Baltimore County [now the Long Green Valley]. The State of Maryland, 1785. Reprinted, 1976. 37 x 53 cm | George Peabody Library |
| 1810 Green, Samuel. [Plan of Baltimore Company's Land.] Manuscript, 1810. Reprinted 1932. | George Peabody Library |
| [185-?] Sachse, E. View from the Porch: House & Farm of Gustav V. Lurman... Baltimore: E. Sachse & Co., [185-?] 90 x 63 cm. | George Peabody Library |
| 1850 Sidney, J.C. and P.J. Browne. Map of the City and County of Baltimore, Maryland. James M. Stephens, 1850. 101 x 75 cm. | George Peabody Library |
| 1857 Map of the City and County of Baltimore Maryland from Actual Surveys by Robert Taylor, 1857. Baltimore: Robert Taylor Publisher. | GPML: G3843.B3 1857 |
| c. 1875 [Map of Baltimore County and Vicinity. c. 1875]. 2 copies: 41.5 x 26.5 cm (colored), and 31 x 26 cm. (n.d.) | George Peabody Library |
| 1938 Aerial Photography Index, Baltimore County, Maryland. Washington: U.S. Dept. of Agriculture, 1983. 49 x 58 cm | GPML: G3843.B3A3 1938 sheet |
| 1939 Map of Baltimore County and Baltimore City Showing the Topography and Election Districts. Baltimore: Maryland Dept. of Geology, Mines and Water Resources, 1939. 113 x 101 cm | GPML: G3843.B3C1 1939 |
| 194? Being Ye Historical Map of Baltimore County. Yardley, Richard Q. Baltimore Sun, 194?. 43 x 37 cm. | GPML: G3843.B3A6 194? |
| 1951-1957 Development Map. Baltimore County, Maryland, Department of Public Works, 1957. 51 x 76 cm. | GPML: G3843.B3G45 1951-1957 |
| 1958 Map of Baltimore County and Baltimore City Showing the Topography and Election Districts. Baltimore: Maryland Dept. of Geology, Mines and Water Resources, 1958. 110 x 90 cm | GPML: G3843.B3C1 1958 |
| 1963 Map of Baltimore County and Baltimore city Showing the Topography and Election Districts. Baltimore: Maryland, Department of Geology, Mines and Water Resources, 1963. 108 x 87 cm | GPML: G3843.B3C1 1963 |
| 1969 Topographic Map of Baltimore County. Baltimore: Maryland Geological Survey, 1969. 110 x 90 cm. | GPML: G3843.B3C1 1969 |
| 1969 Slope Map of Baltimore County. Baltimore: Maryland Geological Survey, 1969. 55 x 88 cm. | GPML: G3843.B3C28 1969 |
| 1971 General Highway Map, Baltimore County, Maryland. State Highway Administration, 1972. 126 x 88 cm. | GPML: G3843.B3P2 1971 |
| 1972 General Highway Map: Baltimore County, Maryland. Maryland State Highway Administration, 1972. 62 x 44 cm. | GPML: G3843.B3P2 1971 |
| 1973 General soil map of Baltimore County, Maryland. U.S. Department of Agriculture, Soil Conservation Service and Maryland Agricultural Experiment Station, 1973. 100 x 86 cm. | GPML: G3843.B3J3 1973 |
| 1975 Mined Land Inventory Map of Baltimore County & Baltimore City. Baltimore: Maryland Geological Survey, 1975. 108 x 88 cm. | GPML: G3843.B3H1 1975 |
| 1981 Important Farmlands, Baltimore County Maryland. Washington: U.S. Soil Conservation Service, 1981. 92 x 67 cm. | GPML: G3843.B3J1 1981.U5 |
| 1982 General Hghway Map, Baltimore County, Maryland. Department of Transportation. Brooklandville, MD. 1982. 78 x 56 cm. | GPML: G3843.B3P2 1982 |
| 1985 Topographic Map of Baltimore County. Baltimore: Maryland Geological Survey, 1985. 92 x 109 cm. | GPML: G3843.B3C1 1985 |
| 1989 Baltimore and Southern Metropolitan area. Falls Church, VA.: American Automobile Association, 1898. 112 x 125 cm. | GPML: G3843.A5P2 1989 |
| 1990 Baltimore County Scenic Roads. Towson: Baltimore County Office of Planning and Zoning, 1990- 59 x 80 cm. | GPML: G3843.B3 KG35 1990-Distr. |
| 1993 Baltimore and Southern Metropolitan Area. Heathrow, FL: American Automobile Association, 1993. 63 x 85. | GPML: G3844.P2 1993 |
| 2002 Patapsco Valley State Park: Complete Trail Map. Ellicott City, MD: Maryland Dept. of Natural Resources, 2002. 92 x 51 cm | GPML: G3842.P355 2002 |