This series contains correspondence between Dr. Penfield and friends and colleagues, as well as social and professional institutions. The series' contents were found at the Montreal Neurological Institute in 2008, and thus, were not included with original correspondence series (Series C) of the Penfield Archive. The records in this series have been catalogued at the item level.

This series contains correspondence between Helen Kermott Penfield and Wilder Graves Penfield, as well as other friends and family between 1920 and 1932.

This series contains a group of calendars, or diaries, kept by Dr. Penfield's wife between 1947 and 1974.

Series consists of miscellaneous material produced and collected by Dr. Penfield. This series includes art work, notes, and correspondence, as well as Dr. Penfield's academic robes and hats. This includes copies of the French 'Bulletin de l'Académie Royale de medecine', 'Bulletin de l'Académie nationale de medecine' and 3 editions of the Montreal La Lancette Canadienne journal. The series also includes less than 1 cm of photographs (found in file J 13-1), a framed diploma (file J 2-3) and selections for an exhibit from 1991 by William Feindel.

This series consists of records generated by Dr. Penfield as an employee of McGill University or the Montreal Neurological Institute. Most of the material in this series is the property of those institutions, and is not considered personal material.

This series consists of most of Dr. Penfield's correspondence. The series is composed of three sub-series corresponding to Dr. Penfield's "Simple System." (C = Correspondence)

Series contains personal and professional correspondence dating between approximately 1865-1877.

Series consists of medical reprints and reprints of articles on natural history as well as other published items such as reports of the Home and School of Industry and the Protestant Infants Home of Montreal.

Series contains documentation of Bell's professional work as a physician in Montreal, including the publication, "Mortality in Montreal," a statement of deaths in the city during the month of January, 1878, as well as his student notebooks and MD thesis.

Series contains various receipts for subscriptions, societies, clubs and organizations.