Numbering about 250 photographs in total, the images contained in the Ralph O. Coleman Papers depict Coleman in portrait shots, in group shots with other OSU Athletics faculty, attending American Baseball Coaches Association meetings, with his wife and friends at his Woodburn home, being honored at award ceremonies, and with other members of the Corvallis Country Club. The images also depict OSU athletics and include portrait shots of players and teams as well as game shots. Primarily pertaining to baseball, these photographs also depict basketball, cross country and track, football, hockey, and wrestling. The views date mostly from the 1910s and 1920s with a few shots of Coleman as a student on the track team.
In addition to photographs, the collection includes an architectural drawing, a calendar notebook, certificates, correspondence, diplomas, a drawing, employment records, military medals/service pins, military records, newspaper clippings, plaques, publications, speeches, and trophies.
Of special interest in the correspondence are letters relating to Coleman's experiences with fellow Delta Upsilon brother and roommate Linus Pauling. Included is a letter from Pauling to Coleman. The calendar notebook contains notations made by Coleman during his work as a coach for the Army in 1945.