Handbook of Texas Online - Ysleta - Community of Ysleta, now part of the city of El Paso. - http://www.tsha.utexas.edu/handbook/online/articles/CC/uqc3.html
XII Travelers Historical Monuments - 12 heroic bronze monuments celebrating the development of the Southwest. - http://www.12travelers.org/
El Paso Archaeological Society - A nonprofit group of avocational and professional archaeologists with a program of lectures and field trips, and which supports the Wilderness Park Museum. Activities, officers, publications. - http://www.epas.com/
El Paso History Tour - histories of the major characters and events in El Paso's history. Includes a 360-degree tour of the mural in the El Paso County building's atrium. - http://www.co.el-paso.tx.us/mural/
El Paso Historical Society - History of El Paso, Texas and the surrounding areas. - http://www.elpasohistory.com