1900 Census Ferguson Madeline 18 Female Sd SD Lake 1-Wd Madison Ferguson John 34 Male Mn SD Lake Concord Twp Ferguson Duman 44 Male Mn SD Lake Wayne Twp Ferguson Thomas 38 Male Mn SD Lake Wayne Twp 1910 Census Ferguson Hallie E 33 Female Wi SD Lake 1-Wd Wentworth Furguson Mary E 60 Female Cana SD Lake 4-Wd Madison Ferguson Duncan 44 Male Mn SD Lake Ramona Twp 1920 Census Ferguson Dan 54 Male Us SD Lake 2-Wd; Madison Furgerson Lala A 50 Female Ia SD Lake 4-Wd; Madison