This correspondence, concerning botanical topics, includes lists of plants.

A rough miscellany of antiquities in North and South America as well as Europe and Asia, taken from published sources and personal observation. Contains a classification of antiquities, and descriptions of ancient monuments of Europe. Includes the author's "Ancient Geography..." manuscript.

These manuscripts include a few letters to John Torrey, Amos Eaton, and Reuben Haines, and journals of travels to the Appalachian mountains (1833), and to the source of the Schuylkill River (1834).

This collection consists of correspondence to Bonaparte from American scientists regarding ornithology, zoology, and specimens.

Collection of 283 letters assembled and presented to the Academy of Natural Sciences of Philadelphia by John Torrey. Correspondents include: Louis Agassiz, Zaccheus Collins, Peter S. Du Ponceau, Elie M. Durand, Asa Gray, William Hembel, Alexander von Humboldt, William H. Keating, James Mease, Samuel G. Morton, George Ord, Charles Pickering, Constantine S. Rafinesque, Benjamin Silliman, Sr., John Torrey, Charles Waterton, Alexander Wilson.

Letters and papers to or from American scientists or about America, selected from the Linnean Society's collections. Includes letters to William Swainson from John Abbott, John J. Audubon, Constantine S. Rafinesque, Isaac Lea, and John E. LeConte; letters to Sir James Edward Smith from Jacob Bigelow, DeWitt Clinton, J.F. Correia da Serra, David Hosack, Theodore Lyman, William Dandridge Peck, Rafinesque, and Gotthilf H.E. Muhlenberg; letters to William Darlington; letters to Asa Gray; letters of John Bartram; letters of Peter Collinson to J.F. Gronovius; letters and papers of John Ellis, including letters from Alexander Garden, Samuel Martin, and Bernard Romans; letters to Carl Linnaeus from John Bartram, John Clayton, Cadwallader Colden, Correia da Serra, Peter Kalm, Adam Kuhn, James Logan, John Mitchell, and Charles Wrangel.