This series contains notes, drafts, research files, and correspondence pertaining to the funding, research, writing, and publication of Something Hidden and its spin-off film concerning Dr. Penfield’s life and work. This series is divided into four subseries: correspondence, research files, manuscript drafts, and memorabilia. The bulk of this section is various drafts of Something Hidden. Some primary material of the Penfields is interfiled with material in this series, presumably consulted in the preparation and editing of various portions of the manuscript.

This series consists of a small cache of papers belonging to other Penfield family members. This series includes correspondence addressed to the mothers of Wilder Penfield and Helen Kermott Penfield, Mrs. E.P. Kermott and Jean Jefferson Penfield; a diary and letters of Penfield’s beloved sister Ruthmary Penfield Inglis, whose brain tumour Penfield unsuccessfully operated on; and a few items pertaining to Penfield’s daughter Ruthmary Penfield Lewis, mother of Jefferson Lewis.

This series consists of original and photocopied diaries, correspondence, personal documents, and manuscript drafts belonging to Wilder Penfield and spanning his lifetime. The material is largely personal in nature and is the result of his travels and exchanges with family, friends, and colleagues. The series is divided into the following sub-series: diaries, correspondence, personal documents, memorabilia, and manuscript drafts.

This series contains varied materials created or kept by Helen Kermott Penfield. The series consists of letters, almost exclusively from Wilder, personal documents, diaries, and memorabilia, including an extensive family chronicle composed by Helen. The materials reflect above all Helen’s relationship with Wilder, but give a glimpse of her childhood and education, service in the war, life in England, social activities in Montreal, and travels with Wilder. This series is divided into four sub-series: diaries, correspondence, personal papers, and memorabilia.