"United States Census, 1880," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MWNS-69D : 16 July 2017), Isaac Auchenbach in entry for Darius Auchenbach, 1880; citing enumeration district ED 129, sheet 204C, NARA microfilm publication T9 (Washington D.C.: National Archives and Records Administration, n.d), roll 1145; FHL microfilm 1,255,145.
"Pennsylvania, County Marriages, 1885-1950," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:VFMF-XKS : 25 September 2017), Isaac C. Auchenbauch and Mary Lengle, 09 Oct 1897; citing Marriage, Schaefferstown, Lebanon, Pennsylvania, United States, various county courts and registers, Pennslyvannia; FHL microfilm 21,464.
"United States Census, 1900," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M33P-SG4 : accessed 26 June 2019), Isaac Auchenbach, Millcreek Township, Newmanstown District, Lebanon, Pennsylvania, United States; citing enumeration district (ED) 132, sheet 8B, family 172, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, 1972.); FHL microfilm 1,241,428.