Lexicon of geologic names of the United States : (including Alaska) /
Wilmarth, Mary Grace,1866-
Washington : U.S. Government Printing Office,
1938.
"Also includes the names and ages but not the definitions of the named geologic units of Canada, Mexico, the West Indies, Central America and Hawaii."
pt. 1.  A-L.--pt. 2.  M-Z.
Geology, Stratigraphic.
Geology
Geology
Geology
Geology