The Society has published a Guide to the Archives and Manuscript Collections of the American Philosophical Society, compiled by Whitfield J. Bell, Jr., and Murphy D. Smith (Philadelphia: 1966); Catalog of Manuscripts in the American Philosophical Society Library, 10 vols. (Westport, Conn.: Greenwood Publication Corp., 1970); and Catalog of Books in the American Philosophical Society Library (Westport, Conn.: Greenwood Publication Corp., 1970).
Restriction: Inquire about possible restrictions on recent acquisitions.
a) 16 letters from or about the Imperial Academy of Sciences (1785–1911, but most are in the 19th c.), some copies, all 1–4 pp. These letters appear in the catalogue under "Saint Petersburg. Academie Imperiale des Sciences."
b) 45 letters, 1789–1910, copied from a microfilm, in a collection listed as "Letters of Scientists. Moscow..." Among the scientists are Benjamin Franklin, Cleveland Abbe, F. G. W. Struve (?), Aleksandr Nikolaevich Veselovsky, Thomas H. Huxley, Alexander Ross Clarke, Sir William Herschel, John Churchman, Joseph Henry, Mr. Radsoff, A. Belopolsky, John Couch Adams, Lewis Boss, John Murray Mitchell, Dr. Rost, J. O. Backlund, Abraham Valentine Williams Jackson, and Carl Salemann.
c) 7 letters to the American Philosophical Society from the Corps of Mining Engineers, 1841–55, all but 1 forwarding publications; the other forwards magnetic and meteorological observations made in the Russian Empire in 1846. These are listed in the catalogue under "Russia. Corps des Ingenieurs des Mines" and "Saint Petersburg. Corps des Ingenieurs des Mines Etat-Major (du)."
d) 5 letters listed under "Russia (or Saint Petersburg). Observatoire physique central (Nicolas)" dated 1851–97, all to the American Philosophical Society, on exchanging publications.
e) 2 letters to John L. Le Conte from the Russian Entomological Society, 1861.
f) 1 letter to the American Philosophical Society from the Imperial Botanical Gardens, 1876, forwarding publications (under "Saint Petersburg. Jardin imperiale de botanique").
Note: A large number of the above letters are in French; many are printed but filled in in manuscript.