1874
1879
LESLIE, Alexander of Aberdeen
1876
GRÉGOIRE, Louis Dr
1879
WEYPRECHT, Carl.
1818
BARROW, John Sir, Bart
1861
ULE, Otto.
1959
Klengston Rude
1909
[Washington, D.C. : U.S. Geological Survey]
1:5m
1882
Cram, George Franklin
1:11m
1938
[Washington, D.C. : United States Department of the Interior, Geological Survey]
1:5m