1900 Census
Ferguson        Thomas B         ??  Male    Il      SD      Mcpherson 2-Wd Eureka
1910 Census
Furgerson       Clarence K       24  Male    Ia      SD      Mcpherson Lincoln Twp
1920 Census
Ferguson        John             30  Male    Sd      SD      Mcpherson Wetonka
Fergeson        Clarance         33  Male    Ia      SD      Mcpherson Willow