[S61] Birth Certificate of Clifford Mohr.
[S85] Death Certificate of Clifford Mohr.
[S228] Christening Certificate of Clifford Frandsen Mohr.
[S65] Personal papers of Clifford Mohr.
[S20] 1920 US Census - Household of Thorwald Mohr.
[S198] 1930 US Census - Household of Thorwald Mohr.
[S2205] 1940 US Census - Household of Clifford F. L. Mohr.
[S229] Lutheran Churches of Chicago: St. Markus (St. Mark's) Norwegian Lutheran Church, Evangelical Lutheran Church in America.
[S1029] Certificate of Marriage of Clifford F.L. Mohr and Grace L. Schoelzel.
[S2160] Colorado, Statewide Marriage Index, 1900-1939, FamilySearch.org (Division of Vital Statistics, Department of Health. Colorado State Archives, Denver), 116763.