"The recent surgical mission to the U.S.S.R.," In Science in Soviet Russia, (Lancaster, PA.: Jaques Cattell Press, 1944) 55-61 / Wilder Graves Penfield
"Notes on a brief visit to Free China," Appendix B from the Minutes of the 10th Meeting of the Subcommittee on Surgery of the Associate Committee on Medical Research, (Ottawa: National Research Council of Canada, 1943) 67 pages. / Wilder Graves Penfield