Washington,Smithsonian Institution,1853

Washington, Smithsonian Institution, 1853

Washington, Govt. Print. Off., 1873

Washington: Smithsonian Institution, 1865

publication published in Philadelphia by the Wagner Free Institute of Science in 1896

Washington: G.P.O., 1879.

Washington, Government Printing Office, 1879.

Washington, Smithsonian Institution, 1852

1894

Charleston, S.C.: James and Williams, printers, 1858.

1848 study by Joseph Leidy

Boston, 1851