http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
E.M. Douglas, geographer in charge ; triangulation by R.U. Goode ; topography by W.J. Lloyd and Pearson Chapman ; surveyed in 1901-1902.
Relief indicated by contours and spot heights.
Verso: text "Description of the topographic map of the United States", and standard symbols used.