This sub-series contains non-professional material created by Dr. Penfield which was unfinished at the time of his death in 1976.

This series contains several of Dr. Penfield's personal appointment diaries, and several diaries of his wife, Helen Kermott Penfiedl. It also currently includes a photograph album from 1913-1916, a scrapbook from Dr. Penfield's time at Galahad School (1905), some miscellaneous material collected by Dr. William Feindel concerning Dr. Penfield and the Montreal Neurological Institute, and an old reprint mailing list compiled by Dr. Penfield.

Sub-series consists of bound appointment diaries used by Dr. Penfield to kep track of both his personal and professional engagements between 1930 and 1976.

Sub-series C-2 consists of manuscripts, typed copies and printed versions of unpublished articles written or co-authored by Dr. Cone. It also includes manuscripts and typescripts forwarded to Dr. Cone by others to be edited. This sub-series is comprised of 22 files (files no. 193 to 214).

Miscellaneous photographs of brain of [a patient] and series of X-rays on “Bone Transplantations (Free Bone Grafts).

Sub-series A-1 contains experiment notebooks from the Chemistry Laboratory, Cambridge, concerning the study of stereochemistry. Of special relevance are the experiments pertaining to the optical activity caused by the restriction of the rotation of a trivalent nitrogen atom. It includes material produced at the Sir William Dunn Institute of Biochemistry related to oxidation reduction systems with particular relevance to the reduction of glutathione and the study of peroxidases in milk and horseradishes. This sub-series is comprised of 4 files (files no. 1 to 4), which are arranged chronologically.

Sub-series A-3 contains experiment notebooks from the Montreal Neurological Institute, concerning experiments on brain swelling as a result of head injury and neurosurgery. Brain slices were examined to determine the effect of aerobic and anaerobic metabolism of electrolytes, pH, oxygen tension, narcotics and convulsants. Of special relevance is the experiment measuring the acetylcholine (Ach) content of cat and rat brains. This sub-series is comprised of 14 files (files nos. 34 to 47), which are arranged chronologically.