This sub-series consists of various drafts of Something Hidden. The drafts are not always easy to distinguish in terms of chronological sequence, but an effort was made during the initial processing to roughly order the drafts by version and divide them by chapter. Also included are notes for additions and deletions, labeled “Adds and Outs.” At times, some research notes and primary Penfield material are interfiled with the drafts. This series also includes a draft of the screenplay for the film.

This sub-series consists of letters exchanged between Wilder Penfield and his family, friends, and acquaintances. The correspondence is of a general and family nature, but covers many aspects of Penfield’s life, including his financial affairs, the indemnity sought for injuries sustained in the Sussex disaster, contacts with medical and scientific men, personal friendships, and a few letters regarding his partnership with Dr. William Cone. A small amount of professional correspondence also appears in this sub-series.

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.

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.

Subseries consists of glass microscope slides.

Subseries consists of card indexes of Dr. Penfield's writings. These indexes were produced by Dr. Penfield himself.

Subseries consists of files containing additional material used by Dr. Penfield in the production of some of his published articles.

Subseries consists of visual material Dr. Penfield used to illustrate his writings. (W/V = Writings / Visual)

Subseries consists of unpublished writings, arranged by subject. This sub-series includes lecture notes, unfinished jobs, and some published writings. In addition, W/US 33, 34 and 35 consist of similar material which was found loose in Dr. Penfield's office after his death. (W/US = Writings / Unpublished by Subject)

Subseries consists of unpublished writings, including talks, addresses, articles, unfinished papers, etc. many of which are printed or published, in full or in part, in some other form and filed elsewhere. (W/U = Writings / Unpublished)