U.S. Department of Health & Human Services
- Marshall, Humphry, 1722-1801
- Philadelphia : Printed by Joseph Crukshank, in Market-Street, between Second and Third-Streets, MDCCLXXXV 
- Trees -- classification
- Pennsylvania Hospital (Philadelphia, Pa.). Medical Library.
- Philadelphia : Printed by Zachariah Poulson, Junior, on the west side of Fourth-Street, between Market-Street and Arch-Street, MDCCXC [i.e. 1794]
- Libraries, Hospital -- organization & administration