References
- “Birchler Family History,” by Joseph Anthony Birchler, Louisville, KY, unpublished.
- California Birth Index, 1905-1995, online database, Ancestry.com, Provo, UT.
- California Death Index, 1940-1997, online database, Ancestry.com, Provo, UT.
- Calvary Cemetery, Louisville, KY.
- The Cherokee Area: A History, 2nd edition, by Anne S. Karem, Cherokee Association, Inc., 1975.
- City of Louisville, Birth Records, 1898-1910, Filson Club Historical Society, Louisville, KY.
- City of Louisville, Death Records, 1866-1910, Filson Club Historical Society, Louisville, KY.
- Commonwealth of Kentucky, Department of Health, Bureau of Vital Statistics, Frankfort, KY, Birth Records, Death Records, Marriage Records, Divorce Records.
- Constitution of the Gruetli Benevolent Society, Incorporated, of Louisville, Kentucky, Anzeiger Print, 1921.
- The Courier-Journal, Louisville, KY, Obituaries.
- Germans to America: Lists of Passengers Arriving at U. S. Ports, 1850-, by Ira A. Glazier and P. William Filby, eds., Scholarly Resources, Inc., Wilmington, DE, 1988.
- Jefferson County Clerk’s Office, Louisville, KY, Deed Records.
- Jefferson County Clerk’s Office, Louisville, KY, Marriage Records.
- Jefferson County Historic Preservation and Archives, Louisville, KY, Naturalization Records.
- Louisville, KY, City Directories.
- Ohio Births, 1908-2011, online database, VitalSearch.com, Merced, CA.
- Ohio Marriage Index, 1970, 1972-2007, online database, Ancestry.com, Provo, UT.
- St. Anthony Cemetery, Jeffersonville, IN.
- St. Boniface Catholic Church, Louisville, KY, Church Records.
- St. Louis Cemetery, Louisville, KY.
- St. Michael Cemetery, Louisville, KY.
- Social Security Death Index: United States, 1937-, online database, Ancestry.com, Provo, UT.
- Swiss Colonists in 19th Century America, originally edited by Dr. Adelrich Steinach in 1889, new Introduction and Indexes by Dr. Urspeter Schelbert, Picton Press, Camden, ME, 1995.
- United States Census, 1790-1940.
- Washington Death Index, 1940-1996, online database, Ancestry.com, Provo, UT.
- World War I Selective Service System Draft Registration Cards, 1917-1918, online database, Ancestry.com, Provo, UT.
- “Notes on the Descendants of Anton Zehnder,” by Margaret Chase Zehnder, Louisville, KY, unpublished.
- Zehnder: Familienstudie 1550-2001 der Zehnder von Einsiedeln, by Alfred Zehnder, Einsiedeln, Switzerland, 2001.
- Zivilstandsamt, Bezirk Einsiedeln, Einsiedeln, Switzerland, Birth Records, Death Records, Marriage Records.