Collection consists of an account book of the Bybee & Newman mine and other accounts, 1881-1883; chattel mortgage from Bybee to William Kahler, 1883; blank William Bybee mine gross production report, 1887; Bybee and C. Decker accounts, 1887. William Bybee owned and operated a placer mine in Josephine County and built one of the largest mining ditches in Southern Oregon.