Dallas Fire Department, Station #4 Young & Ervay No.4 Engine Company. Built 1912., Photograph, n.d.; digital images, (http://texashistory.unt.edu/ark:/67531/metapth117279/ : accessed June 19, 2013), University of North Texas Libraries, The Portal to Texas History, http://texashistory.unt.edu; crediting Dallas Firefighters Museum, Dallas, Texas.
