The collection includes Parker's letters to his family beginning in 1825, instructions from the American Board of Commissioners for Foreign Missions, many letters from Sir John Bowring, British consul at Canton and later governor of Hong Kong, and other correspondence relating to Parker's medical, missionary, diplomatic, and personal affairs. Writings include handwritten sermons and addresses. Medical reports and ledgers include Parker's handwritten quarterly reports of Canton Hospital, which contain lengthy case reports on a selection of surgeries. Two volumes of ledgers list patients treated at Canton Hospital with their diagnoses, and another ledger relates to Parker's private medical practice. Images include the buildings and staff of the Canton hospital and lantern slides of patients with large tumors, all dating from after Parker's time. The collection also includes miscellanea, memorabilia, and a box of preserved urinary calculi removed by Parker from patients in the hospital. Associated with the collection are over 80 oil portraits of Peter Parker's patients with noticeable tumors by Western-trained Chinese artist Lam Qua. Most of the Peter Parker Collection has been photographed. See http://cushing.med.yale.edu/greenstone/collect/pppapers/ Use in conjunction with this finding aid. The associated Lam Qua portraits of Peter Parker's patients are online at http://cushing.med.yale.edu/gsdl/collect/ppdcdot/