"Colorado State Census, 1885," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:K8WX-L93 : 4 March 2021), Annie Smith in entry for Jno W Smith, 1885; citing NARA microfilm publication M158 (Washington, D.C.: National Archives and Records Administration, n.d.); FHL microfilm 498,505.
"Colorado Statewide Marriage Index, 1853-2006," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:KNQ4-P3Q : 19 February 2021), Charles Heyduk and Annie Smith, 01 Jul 1894, Red Cliff, Eagle, Colorado, United States; citing no. , State Archives, Denver; FHL microfilm 1,690,088.
"United States Census, 1900," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MQM3-KQY : accessed 24 August 2021), Anna Heyduk in household of Chas Heyduk, Precincts 1, 3, 16 Red Cliff, Mitchell, Fulford Red Cliff town, Eagle, Colorado, United States; citing enumeration district (ED) 18, sheet 3A, family 82, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, 1972.); FHL microfilm 1,240,120.
"The County Board," The Eagle County Blade (Red Cliff, Colorado), January 11, 1906, page 1, column 4. Colorado Historic Newspapers Collection (https://www.coloradohistoricnewspapers.org/ : accessed 23 Aug 2021).
"Local Paragraphs," The Eagle County Blade (Red Cliff, Colorado), December 6, 1906, page 1, column 1. Colorado Historic Newspapers Collection (https://www.coloradohistoricnewspapers.org/ : accessed 23 Aug 2021).
"United States Census, 1910," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MKWP-R6T : accessed 24 August 2021), Anna C Martin in household of Frank Martin, Red Cliff, Eagle, Colorado, United States; citing enumeration district (ED) ED 37, sheet 2B, family 54, NARA microfilm publication T624 (Washington D.C.: National Archives and Records Administration, 1982), roll 114; FHL microfilm 1,374,127.
"United States Census, 1940," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:K97Y-ZC2 : 5 January 2021), Anna C Martin in household of Charles Worrell, Inglewood Judicial Township, Los Angeles, California, United States; citing enumeration district (ED) 19-329, sheet 16A, line 10, family 375, Sixteenth Census of the United States, 1940, NARA digital publication T627. Records of the Bureau of the Census, 1790 - 2007, RG 29. Washington, D.C.: National Archives and Records Administration, 2012, roll 236.