O'Neary, Barbara (1 item); Orfalea, Greg (1 item); Orrman, James (4 items); Orton, Maybelle and Robert (1 item); Owens, Rochelle (1 item); Pakrass, Ruth (1 item); Palmer, Leonard (1 item); Parker, S.E. (1 item); Parks, Katy (1 item); Payne, Ralph (1 item); Pengly, Lewis (1 item); Pepper, Bob and Betty (1 item); Pharabet, Henri (1 item); Piercy, Marge (2 items); Portuges, Paul (3 items); Printz, Allegra (1 item)