- [S671] 1910 US Federal Census (Population Schedule), Pennsylvania, Delaware County (Database online, Provo, UT: ancestry.com, 2004); http://www.ancestry.com, subscription database, (Digital scan of original records in the National Archives, Washington, DC).
- [S672] 1920 US Federal Census (Population Schedule), Pennsylvania, Montgomery County (Database online, Provo, UT: ancestry.com, 2004); http://www.ancestry.com, subscription database, (Digital scan of original records in the National Archives, Washington, DC).
- [S673] 1930 US Federal Census (Population Schedule), Pennsylvania, Montgomery County (Database online, Provo, Utah: ancestry.com, 1930); http://www.ancestry.com, subscription database, (Digital scan of original records in the National Archives, Washington, DC).
- [S780] Pennsylvania Dutch History Web Site (http://www.horseshoe.cc/: horseshoe.cc).