1920 Census
Ferguson        John Y           75  Male    Ky      MT      Big Horn 3-Wd; Hardin; School Dist 17
Ferguson        William J        52  Male    Il      MT      Big Horn 65-Twp
Ferguson        William H        47  Male    Mt      MT      Big Horn Crow Indian Reservation
Furgerson       Oliver S         28  Male    Mo      MT      Big Horn Crow Indian Reservation