1839. Weber, Edward. Illustrated map of Baltimore and Harford counties, 1839. Map includes some geological information regarding the Chesapeake Bay shores. 49.3 x 34.6 ...
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1840. Weber, Edward. Illustrative map of Allegany and Washington counties,1840. Includes a geological profile of the Cumberland and National roads. 46 x 20.1 cm; 1 imag...
1921. Map of Austria - Steiermark Geological Map, 1921. Scale=1:300,000. Geology, rock types of Steiermark (state), Austria (in German). F. Heritsch.