Smithson Valley Quadrangle Side: 1 of 1
View a full description of this map.
Reference the current side of this Map.
Smithson Valley Quadrangle, map, 1940; Washington D.C.. (https://texashistory.unt.edu/ark:/67531/metapth445267/m1/1/: accessed June 12, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu; crediting UNT Libraries Government Documents Department.