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- [S50] 1920 United States Federal Census, Ancestry.com, (Name: Online publication - Provo, UT, USA: Ancestry.com Operations Inc, 2010. Images reproduced by FamilySearch.Original data - Fourteenth Census of the United States, 1920. (NARA microfilm publication T625, 2076 rolls). Records of the Bureau of the Census, Reco;), Year: 1920; Census Place: Cope, Washington, Colorado; Roll: T625_171; Page: 5A; Enumeration District: 225; Image: 1153.
Record for Leonard M Challis
- [S784] 1920 United States Federal Census, Ancestry.com, (Name: Ancestry.com Operations, Inc.; Location: Provo, UT, USA; Date: 2010;), Year: 1920; Census Place: Cope, Washington, Colorado; Roll: T625_171; Page: 5A; Enumeration District: 225; Image: 1153.
Record for Leonard M Challis
- [S259] U.S., Find A Grave Index, 1600s-Current, Ancestry.com, (Name: Ancestry.com Operations, Inc.; Location: Provo, UT, USA; Date: 2012;).
Record for Myron H. Challis
- [S778] 1930 United States Federal Census, Ancestry.com, (Name: Ancestry.com Operations Inc; Location: Provo, UT, USA; Date: 2002;), Year: 1930; Census Place: Cope, Washington, Colorado; Roll: 251; Page: 4B; Enumeration District: 0015; Image: 519.0; FHL microfilm: 2339986.
Record for Leonard M Challis
- [S48] 1940 United States Federal Census, Ancestry.com, (Name: Online publication - Provo, UT, USA: Ancestry.com Operations, Inc., 2012.Original data - United States of America, Bureau of the Census. Sixteenth Census of the United States, 1940. Washington, D.C.: National Archives and Records Administration, 1940. T627;), Year: 1940; Census Place: Arapahoe, Colorado; Roll: T627_455; Page: 4A; Enumeration District: 3-51.
Record for Myron Challis
- [S49] 1930 United States Federal Census, Ancestry.com, (Name: Online publication - Provo, UT, USA: Ancestry.com Operations Inc, 2002.Original data - United States of America, Bureau of the Census. Fifteenth Census of the United States, 1930. Washington, D.C.: National Archives and Records Administration, 1930. T626,;), Year: 1930; Census Place: Cope, Washington, Colorado; Roll: 251; Page: 4B; Enumeration District: 0015; Image: 519.0; FHL microfilm: 2339986.
Record for Leonard M Challis
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