Sisterdale, Texas (English Wikipedia)

Scharf, Edwin E. "Freethinkers of the Early Texas Hill Country". Freethinkers Association of Central Texas. Archived from the original on February 19, 2009. Retrieved May 9, 2010. Freethinkers Association of Central Texas

marxists.org

"Edgar von Westphalen". Marxists.org. Retrieved May 30, 2010. Roe Hampton University-London
"Jenny von Westphalen". Marxists.org. Retrieved May 30, 2010. Roe Hampton University-London

"National Register of Historic Places-Kendall Co, Tx". U.S. Dept. of Interior, the National Park Service. Retrieved February 2, 2011.

Syers, Ed (October 18, 1964). "Sisterdale Just Spread Out". The Victoria Advocate.

Simon, B. "Marx, Karl-Julius Fröbel, Julius". Roe Hampton University-London. Retrieved April 30, 2010. Roe Hampton University-London

"Sisterdale, Texas". www.texasescapes.com. Retrieved February 26, 2022.
"Treue der Union Monument". Texas Escapes – Blueprints For Travel, LLC. Retrieved April 30, 2010. Texas Escapes – Blueprints For Travel, LLC.
"Sisterdale".

Kennedy, Ira. "German Intellectuals on the Texas Frontier". TexFiles. Retrieved April 30, 2010.

Sister Creek from the Handbook of Texas Online. Retrieved 30 April 2010. Texas State Historical Association
Ragsdale, Crystal Sessie: Zinc, Nicolaus from the Handbook of Texas Online. Retrieved 30 April 2010. Texas State Historical Association
Jordan, Terry G.: Kapp, Ernst from the Handbook of Texas Online. Retrieved 30 April 2010. Texas State Historical Association
Ragsdale, Paul C.: Von Behr, Ottmar from the Handbook of Texas Online. Retrieved 30 April 2010. Texas State Historical Association
Sibley, Marilyn M.: Douai, Carl Daniel Adolph from the Handbook of Texas Online. Retrieved 30 April 2010. Texas State Historical Association
Gold, Ella: Siemering, August from the Handbook of Texas Online. Retrieved 30 April 2010. Texas State Historical Association
Biesele, Rudolph L.: German Attitude Toward the Civil War from the Handbook of Texas Online. Retrieved 9 May 2010. Texas State Historical Association
Shook, Robert W.: Duff, James from the Handbook of Texas Online. Retrieved 30 April 2010. Texas State Historical Association
Glen E. Lich. "Handbook of Texas Online: Sisterdale, TX". Texas State Historical Association. Retrieved September 8, 2013.

"Treue der Union Monument". TexGenWeb, Kendall Co. Archived from the original on February 26, 2012. Retrieved April 30, 2010. TexGenWeb, Kendall Co

Puglisi Jr., Richard L. "Bexar County Chief Justice August Siemering, 1830–1883". University of the Incarnate Word. Retrieved May 9, 2010. University of the Incarnate Word

Biesele, R L. "The Texas State Convention of Germans in 1854". The Texas State Historical Association. Retrieved November 22, 2010. The Texas State Historical Association

"Geographical Names Information System, Sisterdale". U.S. Dept of the Interior. Retrieved April 30, 2010. U.S. Dept of the Interior

Scharf, Edwin E. "Freethinkers of the Early Texas Hill Country". Freethinkers Association of Central Texas. Archived from the original on February 19, 2009. Retrieved May 9, 2010. Freethinkers Association of Central Texas
"Treue der Union Monument". TexGenWeb, Kendall Co. Archived from the original on February 26, 2012. Retrieved April 30, 2010. TexGenWeb, Kendall Co

"Wine Industry Pioneers". The Wine Institute. Retrieved May 30, 2010. The Wine Institute