These cards of admission were to lectures held at the University of Pennsylvania, St. George's Hospital (London), and the University of Edinburgh. Rush has written comments on the lecturers on the backs of several of the cards.

These papers include correspondence concerning the publication and republication of Wood's "Dispensatory of the United States" and "Treatise on Therapeutics and Pharmacology, or Materia Medica" by J.B. Lippincott & Co. Also included are twelve diplomas and certificates of membership in American and European professional societies.

These volumes contain notes from lectures taken by Wistar and lectures given by Wistar. Subjects include bones, teeth, amputation, and midwifery.

This collection consists of a rough and finished draft of Coates' lecture, which was delivered before the Phrenological Society of Philadelphia. In it he included a review of Boston professor John C. Warren's work on the nervous system.

This is Taylor's dissertation for the degree of Doctor of Medicine from the University of Edinburgh. It was originally published in Latin (Edinburgh, 1800), and John Brandreth made this English translation for a friend in 1830.

This volume contains medical notes by Wistar, including observations on yellow fever and arguments to prove its foreign origin, facts relative to the progress of the fever in 1797, the infection and death of Colonel Van Emburgh, the infection of the crew of the ship "Deborah" and of the Durham boat (1802), an account of the diseases which afflicted the family of James Hammar in Montgomery County (Pa.), facts relating to the typhus fever of 1812-1813, case histories (1796-1803), temperature chart (1758-1759, 1760), and a thermometrical journal (1760-1765) kept by Charles Norris and copied by Wistar from notes in possession of Joseph Parker Norris.

These notes were kept by Ewing of medical lectures he attended, given by Drs. Nathaniel Chapman, John R. Coxe, and Philip S. Physick. The lectures concern fevers, materia medica, surgery, and diagnosis.

This collection contains material relating to his legal affairs, medical publications, receipts for books purchased, and information on botany. Important correspondents include Edward H. Clarke, George Mifflin Dallas, Samuel David Gross, and Joseph Henry. There is also family history in these papers.

Nine of these letters are addressed to Sir Alexander Dick of Edinburgh (1763-1768), and relate to Morgan's medical studies, his travels on the Continent, and the founding of the medical department of the College of Physicians. These are copies of originals in possession of Mrs. Dick Cunyngham, Prestonfield House, Edinburgh. In addition there are letters from Morgan to: Petrus Camper, William Smith, Samuel Vaughan, Jr.; and from Peter Collinson to Camper; Camper to Morgan; S. Vaughan Jr. to Camper; and an exchange between Christian F. Michaelis and Camper. These concern Morgan, with mentions of fossils (mastodon bones in America), natural history, comments on Franklin, Jefferson, and Angelica Kauffmann. These are from originals in the Petrus Camper Papers, on deposit (1976) at the University of Amsterdam Library.

This collection contains mostly entomological material, with much information on the description and identification of particular insects, entomological collections, and the study of entomology in Europe and the United States. In addition, there are materials on medicine and hospitals during the American Civil War, on the Corps of Topographical Engineers, the United States Army, on natural history in the United States, and on the LeConte's family. Some letters are written to President Rutherford B. Hayes and concern the Commissionership of Agriculture, for which LeConte was considered, but not appointed. Letters of John Eatton LeConte and Joseph LeConte are included.

The collection contains information on Fox family speculation in western lands, two manuscript maps from the 1790's and 1830's depicting the family's holdings in northwestern Pennsylvania, and a photograph album from the 1890's documenting Chestnutwold, the Fox estate adjacent to Andalusia. Chief correspondents are Samuel and George Fox.

The collection includes letters between Hutchinson and his uncle Israel Pemberton, written while Hutchinson was a student of medicine in London. There are also 12 tickets of admission to medical lectures in Philadelphia and London, including one given by William Hunter, and 3 unused cards of admission to Hutchinson's own lectures. Miscellaneous items include Hutchinson's marriage certificate; genealogical data on the Hutchinson, Hare, and Pemberton families; and stock certificates, 1857-1872, of the McKean and Elk Land and Improvement Company. Materials dated post-1793 are to and from Hutchinson family members.