File consists of photographs of Michael Ondaatje, who was a writer-in-residence at Champlain College.

File consists of photographs of Professor (Chemistry) Keith Oldham. He is a recipient of the Distinguished Research Award (1989).

File consists of one photograph of Lady Mary Helen Ogilvie (1900-1990) who received an honorary degree (Doctor of Laws) from Trent University in 1972.

This fonds consists of a scrapbook containing photographs depicting Oak Ridge Camp activities and canoe trips. Included in the album are newspaper clippings relating to Stoney Lake Regatta. Photographs of Mount Rushmore, Catalina, Yellowstone Park and La Jolla Beach can also be found in this collection.

File consists of photographs of Elizabeth O'Connell, Assistant to the Master of Peter Robinson College (1985-1990).

File consists of photographs of Michael O'Brien who was the Operations Engineer at Trent University from 1967 to 1979 and the Assistant Director of Physical Plant and General Services from 1980 to 1985. One photograph includes Don Lamond, Ron Mawhood, and Peter Hoes.

File consists of photographs of Marian O'Brien, former Assistant to the Master of Champlain College from 1992 to 1994 and the College Administrator from 1995 to 1999.

File consists of two photographs of Ferg O'Brien.

File consists of a photograph of Sybil Nunn-Thorn standing at the Bata podium set up for convocation under an umbrella.

File consists of a photograph of Alan Nunn (d. 2004) who was a successful actor and a Trent University Alumni.