1900 Census Ferguson Elizabeth 79 Female In IA Crawford Iowa Twp 1910 Census Ferguson W W 34 Male Ia IA Crawford 3-Wd Denison Ferguson Mable 26 Female Ia IA Crawford Denison Twp 1920 Census Ferguson William 43 Male Ia IA Crawford 2-Wd; Denison Ferguson Charley 52 Male Oh IA Crawford East Boyer