1900 Census
Furguson        Burton F         40  Male    Irel    IA      Plymouth 2-Wd Le Mars
Fergusson       Mickle           46  Male    Scot    IA      Plymouth 3-Wd Le Mars
Fergusson       David            42  Male    Wi      IA      Plymouth Hungerford Twp
1910 Census
Ferguson        Arthur           23  Male    Ia      IA      Plymouth 1-Wd Le Mars
Ferguson        Le Roy H         25  Male    Mo      IA      Plymouth 2-Wd Le Mars
Ferguson        Michael          51  Male    Irel    IA      Plymouth 3-Wd Le Mars
Ferguson        George A         35  Male    Scot    IA      Plymouth Hungerford Twp
Ferguson        William          49  Male    Scot    IA      Plymouth Perry Twp
1920 Census
Ferguson        Corla            38  Female  Ia      IA      Plymouth 1-Wd; Le Mars
Ferguson        Michail          62  Male    Irel    IA      Plymouth 3-Wd; Le Mars
Fergueson       George           46  Male    Scot    IA      Plymouth Hungerford
Fergusen        Francis          32  Male    Ia      IA      Plymouth Perry
Ferguson        William          35  Male    Scot    IA      Plymouth Perry