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 Collection: GLO Historic County Maps
 Collection: O. Henry Project
Map of Webb County
Cadastral map of Webb County, Texas in the South Texas Plains region. Some features are marked in color and some sketched illustrations around the title. Scale ca. 1:133,334 (4000 varas per inch). Authorship is attributed to W.S. Porter, later known as the short story writer O. Henry. texashistory.unt.edu/ark:/67531/metapth89053/
Map of Kent County
Cadastral map of Kent County, Texas in the Panhandle Plains region. Scale ca. 1:133,334 (4000 varas per inch). Shows boundaries and ownership of land, including that of several railroad companies. Compiled and drawn by William S. Porter, later known as the short story writer O. Henry. Map is notable for its landscape drawings near the top. texashistory.unt.edu/ark:/67531/metapth88727/