A published first edition, 1837, of Jean Baptiste Gaspard Roux de Rochelle's History of the United States of America, in French, with a companion volume of original sketches used for the 96 engraved plates. Sketches are of American scenes and history, some apparently original, others after de Bry and other artists, all used in Roux de rochelle's book.

These are the original sketches used for the engravings in Day's 1843 publication, "Historical Collections of the State of Pennsylvania" (Philadelphia). They are finely detailed renderings of public and private structures and landscape throughout Pennsylvania. Accompanying these sketches are 150 pages of photocopied letters of Day, from originals at Yale University. These were used by Smith in his book.

Dalton Dorr (1846-1901) was the curator, secretary and director of the Pennsylvania Museum and School of Industrial Art in Philadelphia, the forerunner of the Philadelphia Museum of Art, from 1880-1899. A journal, written in 1897, copied from his notes and from memory, of travels in Greenland (1869), the Indian Territory, Colorado and the Pacific coast (1872-73); Paris, England, Scotland, and Ireland (1882-85), with some sketches. He took the Greenland cruise with Isaac I. Hayes in 1869, which was described by Hayes in his "Land of Desolation" (New York: Harper, 1872). See also, a companion volume of albumen prints taken by William Bradford and other members of "Under the midnight sun: a pleasure cruise in Greenland" in the summer of 1869.

An evolutionist before Darwin, an embryologist, paleontologist, and comparative anatomist, Étienne Geoffroy Saint Hilaire was a Professor of Vertebrate Zoology at the Musée National d'Histoire Naturelle in Paris for the half century following the Reign of Terror. Following in the footsteps of Lamarck, Geoffroy held tenaciously to a belief in the underlying unity of organismal design, to the great change of being, and the possibility of the transmutation of species in time, amassing evidence for his claims through research in comparative anatomy, paleontology, and embryology. The Geoffroy Collection is comprised of 0.75 linear feet of lecture notes and correspondence relating to Geoffroy's diverse interests in natural history, Egypt, comparative anatomy, analogies, paleontology, and embryology, and it is particularly rich for his studies of teratology. All items are in French.

The youngest son of Charles Willson Peale, Titian Ramsay Peale was an accomplished artist, naturalist, and explorer. This collection of ink, pencil, and watercolor sketches, with some engravings and lithographs, forms the bulk of Peale's artistic output. The drawings can be grouped into several periods of artistic output: pre-1818 (primarily watercolors of butterflies); from the Stephen Harriman Long Expedition to the American west in 1819-1820, on which Peale traveled as zoologist (there are views of animals, Indians, landscapes, etc.); for his 1821-1838 interlude period, spent primarily on the east coast (insects, animals, moose hunting in Marine, his trip to South America in 1830-1831, coin and medal designs); his period as a naturalist on the worldwide U.S. Exploring Expedition under the command of Charles Wilkes, 1838-1842; from the 1849-1873 period when he sketched around Washington, D. C. and in New Jersey; and there are more than 160 undated sketches of: animal skulls and bones, birds, plants, fish, insects, landscapes, and zoology.

A physician, natural historian, and professor at the University of Pennsylvania, Benjamin Smith Barton (1766-1815) was one of the central figures in Philadelphia's early national scientific establishment. Having received his medical training in European universities, Barton was appointed Professor at the University of Pennsylvania in 1789, lecturing on botany, materia medica, natural history. A prolific author, he established his reputation as one of the nation's preeminent botanists through his botanical text book The Elements of Botany (1803), but his contribtions to zoology, ethnology, and medicine were equally noteworthy. Barton's monograph on the "fascinating faculty" of the rattlesnake and his efforts in historical linguistics (New Views of the Origin of the Tribes and Nations of America, 1798) were widely read, and his Philadelphia Medical and Physical Journal (1804-1809) was one of the nation's first medical journals and an important outlet for natural historical research. The Barton Papers offer a comprehensive view of the professional work of Benjamin Smith Barton from the time of his return to the United States in 1789 until his death. The collection is divided into five series: Correspondence, Subject Files, Bound Volumes, Graphic Materials, and Printing Plates. The collection includes a particularly valuable series of botanical, medical, and natural historical drawings collected by Barton for research, reference, and publication. Among the many artists represented are William Bartram, Frederick Pursh, Pierre Turpin, and Benjamin Henry Latrobe.

The most stellar member of a stellar family, Elisha Kent Kane was among the most popular American explorers of the mid-nineteenth century, a hero in the tragic mode. Born in Philadelphia in 1820, the son of John Kintzing Kane and Jane Duval Leiper, Kane studied medicine at the University of Pennsylvania before earning a commission as a naval surgeon. While in the Navy, Kane embarked on the succession of voyages to exotic locales that became the basis for his extraordinary fame. In 1843, he attended Caleb Cushing's first diplomatic mission to China as ship's physician, and subsequently traveled to the Philippines and Western Africa. Distinguishing himself in the Mexican War, Kane's greatest fame came from two expeditions to the arctic, aiming to locate the lost explorer, Sir John Franklin and to explore for evidence of the open polar sea. Kane died in 1857 while attempting to organize a third arctic voyage. Part of the Kane Family Collection, the Papers of Elisha Kent Kane contain a mix of personal and family correspondence with correspondence relating to all of Kane's explorations. Intelligent, articulate and very much a romantic, Kane's letters are expressive and passionate. The collection provides fine documentation of youth, his relationship with the Spiritualist Margaret Fox, and of course his travels to China and off the coast of Africa in 1846. Kane's two expeditions to the arctic are particularly well documented, with correspondence, notes, logbooks, diaries, and sketches, as well as Kane's post-expedition notes, writings, and lectures recounting his experiences.