
Map of Calvert County Showing the Topography and Election Districts. Baltimore: Maryland Geological Survey, 1902. 70 x 102 cm. | 
Prince Frederick Quadrangle, 1904-05. U.S. Geological Survey, 1910. 42 x 51 cm. | 
Prince Frederick Quadrangle, 1934-35. U.S. Geological Survey, 1938. 42 x 51 cm. |

Ellicott Sheet, 1890. U.S. Geological Survey, 1894. Reprinted, 1904. 42 x 51 cm | 
Mt. Airy Quadrangle, 1906-07. U.S. Geological Survey, 1909. Reprinted, 1925. 42 x 51 cm. | 
Map of Westminister and Vicinity. Maryland Geological Survey, 1909. 61 x 51 cm. |