Files concerning the alumni activities of classes from 1873-1962 including rosters, newsletters, reunion letters, biographical data sheets filled out by members, mailing list cards, information concerning their members printed by the various classes on their anniversaries, reunion reports, printed minutes of meetings of the Cornell University Association of Class Secretaries, photographs, and miscellaneous printed items concerning reunions. Also, letters from the alumni to their class secretaries and university officials concerning alumni affairs.