1900 Census
Ferguson        James C          34  Male    Ks      CO      San Miguel Ophir Pct
Ferguson        Harry            28  Male    Co      CO      San Miguel W Telluride
1910 Census
Ferguson        Gertrude         14  Female  In      CO      San Miguel Avage Basin 14-Pct S
Ferguson        James C          44  Male    Ks      CO      San Miguel Ophir 4-Pct
1920 Census
Ferguson        Franklin         32  Male    Co      CO      San Miguel Norwood; 9-Pct
Ferguson        James C          53  Male    Ks      CO      San Miguel Ophir; 4-Pct