Author
Alexander, J. H. (John Henry), 1812-1867
1
Ducatel, Julius Timoleon, 1796-1849
1
Friis, Herman R. (Herman Ralph), 1905-1989
1
Geological Survey (U.S.)
1
Instituto Geológico (São Paulo, Brazil)
1
Maryland. General Assembly
1
Maryland. Governor (1833-1836 : Thomas)
1
National Archives (U.S.)
1
United States. Marine Corps
1