Materials collected and created by Dr. Penfield in producing writings which were not books, and for which no reprints exist. (W/PNR = Writings/Published No Reprint)
This sub-series includes the notes, drafts, and correspondence Dr. Penfield created and collected in producing his various non-book writings. (W/P = Writings / Published)
This sub-series includes the notes, drafts, correspondence, and other records Dr. Penfield produced and collected in creating his various books. (W/B = Writings / Books)