These letters relate to natural history and birds.

These minutes, kept in the hand of Provost William Smith, concern the German free schools, and include letters and reports in full or abstract.

This is a facsimile copy of Alexander von Humboldt's letters to Bonpland (ca. 65 total), as well as Bonpland's botanical journal.

Correspondence to and from John Bartram and his son, William Bartram.

This is a forty-eight page report on the Delaware Indians and language, with selected words and phrases and their meanings.

Letters, principally of Rev. Jason Lee to Dr. Nathan Bangs, pertaining to the conduct of the Methodist Mission at Willamette, Oregon, for Flat Head, Kalapooya, and other Indians (the Oregon Mission of the Missionary Society of the Methodist Episcopal Church).

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

These manuscripts include correspondence to and from Hume, miscellaneous letters neither by or to Hume, cancelled checks, verses, notes, and papers not in Hume's handwriting.

These are the Sloane manuscripts 4036-4069, comprised principally of letters to Sloane from scholars, physicians, naturalists, and collectors in Great Britain, Europe, and America.

This collection includes letters between Ingenhousz and European and American scientists.

Topics of these lectures include climatology, inertia, electricity, and fluids.

These volumes contain lists of Philadelphia craftsmen, compiled from the city directories, 1785-1800, and arranged alphabetically within each craft or trade. Included in the index are similar data gleaned from Philadelphia newspaper advertisements.

Correspondence, project records, personal papers, architectural drawings and documents, and miscellanea of Robert Mills, an American architect who studied with Thomas Jefferson and who designed several prominent American buildings and structures including the Washington Monument.

This catalog was compiled by James R. Friday, Roy M. MacLeod, and Philippa Shepherd, and includes guides to published works, diaries, notebooks, journals, correspondence, and newspaper clippings.

Includes "Description abrègée du Haut-Missouri adressé: a Monsieur don Zénon Trudeau," an account of a journey up the Missouri River, with descriptions of the life and manners of the Indian tribes, prepared for Don Zenon Trudeau, Lieutenant Governor of the Country East of the Illinois (n.d., [after 1795]). Extracts from journals, June 7, 1794-June 1796 (part printed from copy in Department of State Archives, Washington), 190 pages. Approximately 200 pages of letters. Materials contain descriptions of the culture of the Plains Indians (Cheyenne, Arikara, Mandan, Pawnee, Gros Ventres, Sioux, Poncas), dress, customs, marriage, birth; calumet dance, sun dance, buffalo dance; warfare.

These are primarily letters with family members in Ireland while Harvey traveled and lectured in the United States. In 1849 he lectured on botany at the Lowell Institute in Boston and toured much of the eastern coast of the U. S. There are detailed letters about what he saw and the people he met.

Correspondents include C. D. Ebeling, Alexander von Humboldt, and Henry Melchior Muhlenberg.

These are letters from Jeremy Belknap, Aaron Dexter, Ezra Stile, Samuel Vaughan, Jr., and others. There are also drafts of some of Cutler's letters.

These manuscripts include dictionaries, grammars, catechisms, prayers, and Bible tales prepared by French Sulpician missionaries in New France in the languages of Nipissing-Algonquin, Mohawk, Huron, and Onondaga.