Preliminary survey of the entrance to the Rio Grande, Texas / topography by W.E. Greenwell ; hydrography by the party under the command of J. Wilkinson ; drng. by W.E. Greenwell ; engd. by C.A. Knight & F.W. Benner.
United States Coast Survey. Preliminary survey of the entrance to the Rio Grande, Texas / topography by W.E. Greenwell ; hydrography by the party under the command of J. Wilkinson ; drng. by W.E. Greenwell ; engd. by C.A. Knight & F.W. Benner., Map, 1854; digital image, (http://texashistory.unt.edu/ark:/67531/metapth2480 : accessed November 22, 2009), University of North Texas Libraries, The Portal to Texas History, http://texashistory.unt.edu; crediting University of North Texas Libraries, Denton, Texas.