Looking for Caufield Beasley and Conlon Any Tips Welcome

Am interested in finding out more about my fathers side of the family. The Last name is Caufield--Grant Caufield and Sally Beasley-- Anne O. Beasley b. 1903 Minnesota/ d. 1990 Spokane, WA, daughter of Thomas Conlon. This is all I know from death certificates. Would like to know any relatives, ancestors, and origin of my family. Any information will be helpful, thanks!