This sub-series contains letters collected and kept by Helen Kermott Penfield. The bulk of these letters are from Wilder Penfield. Penfield wrote to Helen almost every second day, sending her detailed accounts of life at Princeton and Oxford, as well as extensive descriptions on his personal outlook and inner life. Helen preserved these letters in meticulous order. This sub-series also contains letters from Helen’s mother and grandmother among others. Finally, this sub-series contains a great number of condolences received following the death of Wilder Penfield.