- "I went... to visit Robert Morris’s greenhouse [serre chaud] near Philadelphia. It had very beautiful specimens of orange trees, lemon trees, and pineapples.]
- c. September 6, 1797, A Schedule of Property within the State of Pennsylvania Conveyed by Robert Morris, to the Hon. James Biddle, Esq. And Mr. William Bell, in Trust for the use and account of the Pennsylvania Property Company 
- "An Estate called the Hills Situate in the Northern Liberties, near the City of Philadelphia, containing Three hundred acres of land highly improved, and on which are erected a large and elegant greenhouse, with a hot house of fifty feet on each side; on the back front a House for a gardener, with one large and five small rooms, also two large rooms on the back or north front of the hot house, with an excellent vault under the green houses, and a covered room for preserving roots & c in winter; the whole being a strong stone building, with the necessary glasses, casements, fruit trees, plants shrubs & c in good order; a well of excellent water, with a pump close to the north front the whole enclosed within a large Garden stocked with fruit trees of the best kind &c. & c."
Samuel Vaughan, Plan of the buildings and grounds of Mount Vernon, 1787.
Charles Willson Peale, Letter to Angelica Peale describing his garden at Belfield, November 22, 1815.
Jeremiah Paul, “Robert Morris’ Seat on Schuylkill,” July 20, 1794.
John Archibald Woodside, Lemon Hill, 1807.
Hugh Reinagle, Elgin Garden on Fifth Avenue, c. 1812.
Charles Willson Peale, View of the garden at Belfield, 1816.
William Satchwell Leney, View of the Botanic Garden of the State of New York, 1828.
Joseph Jacques Ramée, Estate plan for Calverton [detail], c. 1816, in Parcs & jardins (c. 1836), pl. 1.
Augustus Weidenbach, Belvedere, c. 1858.
- Moreau de St. Méry's American Journey (1793-1798), trans. and ed. Kenneth Roberts and Anna M. Roberts (Garden City, New York: Doubleday & Company, Inc., 1947) 240, view on Zotero.
- A Schedule of Property within the State of Pennsylvania Conveyed by Robert Morris, to the Hon. James Biddle, Esq. And Mr. William Bell, in Trust for the use and account of the Pennsylvania Property Company, c. September 6, 1797, Autograph Collection of the Historical Society of Pennsylvania, original MS reproduced Robbins, 1987, 136, view on Zotero.