1900 Census
Ferguson        D M              36  Male    Cana    MT      Carbon 1-Wd Red Lodge
Ferguson        Thomas F         35  Male    Pa      MT      Carbon Clarks Fork Twp
Furgeson        Thomas           57  Male    Wi      MT      Carbon Red Lodge Twp
1910 Census
Ferguson        Bridget          59  Female  Cana    MT      Carbon Gibbs School Dist
Ferguson        O M              45  Male    Cana    MT      Carbon School Dist 34
1920 Census
Ferguson        Robert O         42  Male    Tx      MT      Carbon 1-Wd; Bridger