This correspondence is chiefly to William Bartram concerning personal matters and birds.

These letters relate to natural history and birds.

These reels include letters to George Ord in Pennsylvania (1830-1869) and letters to Charles Edmonstone and sisters-in-law Eliza and Helen Edmonstone. There are also extracts of four volumes of observations on birds recorded by Norman Moore (1862-1871) and letters to Moore.

The naturalist Spencer Fullerton Baird worked as Assistant Secretary and Secretary of the Smithsonian Institution from 1850 until his death in 1887. A prolific collector and writer, Baird made important contributions to American ornithology, mammalogy, and herpetology, completing three monumental works, The Mammals of North America (Philadelphia, 1859), Birds of North America (Philadelphia, 1860), written with John Cassin, and History of North American Birds (Boston, 1874-1884), 5 vols., with Brewer and Robert Ridgway. The Baird Collection includes twelve letters written by Baird to the Boston printing firm, Welch, Bigelow and Co., all regarding editorial details in printing of the History of North American Birds.

This volume, written between May 3 and December 2, includes essays on mineralogy, the vegetable kingdom (such as botany and fruitification), and the animal kingdom (such as zoology, ornithology, and generation of animals).

This material relates to Alexander B. Grosart's biography of Wilson. There are notes and copies of letters and documents, including a copy of Wilson's will. There is one poem by Wilson, "The Last Wish," and an 1806 letter to William Bartram.

The primary correspondence (ca. 65 letters) is with William Cooper (1798-1864) on Bonaparte's publications, especially "American Ornithology" and "Observations on the Nomenclature of Wilson's Ornithology," but also included are many references to American and European men of science and learned societies. There are also letters to Isidore Geoffroy Saint-Hilaire, George Robert Gray, Titian Ramsay Peale, and Wilhelm P. S. Rüppell.

This collection of letters and documents relates primarily to Charles Waterton (B W31n) but included as well are papers of the family (B W31m). Most of the letters to or from Waterton concern birds, bird mating, domestic news, natural history, and Walton Hall, his estate. In addition, there are recipes and a housekeeping account book (1780-1781). There are numerous letters with his sisters-in-law, Eliza and Helen Edmonstone, and also an exchange of letters between Waterton's son Edmund and Sir George Bowyer concerning Papal audiences.

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

This collection contains professional and personal correspondece, as well as some personal business accounts. The topics mentioned range from general ornithology to specific birds, particularly of the West Indies and South America; bird illustrations and various publications; paleontology, and zoology.

Through his craniometic studies of human races, the Philadelphia physician Samuel George Morton (1799-1851) exerted a profound influence on the development of physical anthropology in antebellum America, and made substantial contributions to mineralogy, paleontology, and natural history. Relating primarily to Morton's scientific interests, the Morton Papers include insights into Morton's perspectives on education, medical practice, geology and mineralogy, craniology, paleontology, the Wilkes Exploring Expedition (also known as the United States Exploring Expedition 1838-1842), and his two major monographs, the Crania Americana and Crania Aegyptiaca. Several of the letters were written by Morton in his capacity as corresponding secretary of the Academy of Natural Sciences of Philadelphia. Also included in this collection are Morton's "Some Remarks on the Infrequency of Mixed Offspring Between the European and Australian Races" (1850), Joseph Barclay Pentland's notes on the aborigines of Peru (ca. 1840?), and newspaper clippings on Morton's death; a diary of Morton's trip to the West Indies, 1834, a set of craniological sketches for use in Crania Americana, and a microfilm of letters in private hands, written to Morton, 1838-1844

Arthur J. Cain is an evolutionary biologist whose research interests have included genetics, natural selection, biogeography, and systematics. Based at Oxford University and, later, the University of Liverpool, much of Cain's research was field-based, focusing on terrestrial gatsropods. This collection contains correspondence, grant applications, reports, programs for scientific meetings, unpublished papers and lectures, research notes, charts, graphs, maps, and manuscript reviews of journal articles and books. The Cain Papers is divided into three series: I. Correspondence ; II. Subject Files ; and, III. Papers by Colleagues. Arrangement is alphabetical by folder title, and chronological within each folder.