Baltimore & Ohio R.R. : all trains via Washington with stop-over privilege.
Baltimore & Ohio R.R. : all trains via Washington with stop-over privilege., map, 1921; [Baltimore]. (texashistory.unt.edu/ark:/67531/metapth251808/: accessed July 27, 2016), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; crediting University of Texas at Arlington Library.