http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
E.M. Douglas, geographer in charge ; topography by Arthur Stiles, J.E. Blackburn, and S.T. Penick ; triangulation by Arthur Stiles ; surveyed in 1904-1905 ; surveyed in cooperation with the University of Texas Mineral Survey.
Relief shown by contours and spot heights.
"Surveyed in cooperation with the University of Texas Mineral Survey."
Verso: text "The topographic maps of the United States", standard symbols.