Notes:
1900 Census, CO, Chaffee Co., Silada City
Elmer is living with two other people. He is s physician and is single.
1910 Census, CO, El Paso Co., Colorado Springs.
Elmer, age 41, is now married to Bertha, age 38, who is listed as being born in Canada, Fa: England, Mo: England, [Scotland is crossed out]
1920 Census CO, Boulder Co., Boulder City, Precinct 1, ED 53, sheet 8A, 9/10 Jan 1920
Mumma, Elmer, head, 51, married, b. OH, Fa: OH, Mo: OH, Physician
" , Bertha, wife, 46, married, b. MO, Fa: England, Mo: Ireland
1930 Census CO, Boulder Co., Boulder City, Ward 3, ED ?, sheet 17B, 2 Apr 1930
Mumma, Elmer, head, 62, married at age 29, b. MO, Fa: England, Mo: North Ireland, occ: physician M.D.
" , Bertha, wife, 58, married at age 25, b. IL, Fa: KY, Mo: IL
[Some significant errors in birth locations and dates of marriage]