http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
U.S. Department of Agriculture, Forest Service, compiled by F.E. Washburn and R.F. Burrus, revised by Flack.
Earle H. Clapp, Forest Service, Acting Chief, T.W. Norcross, Chief, Division of Engineering.
"Compiled at Regional Office, Denver from U.S.G.S., G.L.O., Forest Service and other surveys."