Autograph letters of naturalists, 1744-1894


Date: 1744-1894 | Size: 1 microfilm_reel(s)


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.

Collection Information

Physical description

1 microfilm reel.


Presented by Academy of Natural Sciences of Philadelphia and accessioned, 1953.

Location of originals:

Originals in Academy of Natural Sciences of Philadelphia.

Alternate formats available

Repository holds a duplicate copy of the microfilm (negative).

Early American History Note

This is a microfilm of an early American collection that may be of interest to researchers at the APS and may complement an original manuscript collection at the APS.

Indexing Terms


  • Microfilm Collection
  • Minutes.

Personal Name(s)

  • Agassiz, Louis, 1807-1873
  • Collins, Zaccheus, 1764-1831
  • Du Ponceau, Peter Stephen, 1760-1844
  • Gray, Asa, 1810-1888
  • Hembel, William
  • Humboldt, Alexander von, 1769-1859
  • Keating, William Hypolitus, 1799-1840
  • Mease, James, 1771-1846
  • Morton, Samuel George, 1799-1851
  • Ord, George, 1781-1866
  • Pickering, Edward C. (Edward Charles), 1846-1919
  • Rafinesque, C. S. (Constantine Samuel), 1783-1840
  • Silliman, Benjamin, 1779-1864
  • Torrey, John, 1796-1873
  • Torrey, John, 1796-1873
  • Waterton , Charles, 1782-1865
  • Wilson, Alexander, 1766-1813