Morgan-McKoon correspondence 1886-1893, 1903-1912
Additional Descriptive Data
Cudlipp, J. F. "Osmon Royal, M.D." The Christian Advocate 86 (April 27, 1911): 579
Gaston, Joseph. Portland, Oregon: Its History and Builders, in Connection with the Antecedent Explorations, Discoveries and Movements of the Pioneers that Selected the Site for the Great City of the Pacific. Volume III. Chicago: S. J. Clarke Publishing Co., 1911.