This volume is an elementary treatise written by an unknown author in the late 18th century.

The Grammar and Vocabulary of the Tamil Language includes a list of words and phrases in Tamil, with English equivalents, a list of English words for which equivalents were not established, and grammatical notes on Tamil, with phonetic transcriptions.

Book of detailed watercolor and ink drawings of the geological strata, probably New York state, and of the fossil remains of mollusks found in the formations.

This is a detailed description, in an unknown hand, of the fair, with information concerning the lay-out and structures and listings of the various exhibits constructed by the United States and other countries.

This journal is by an unknown author and records a vacation spent on Cape Cod in 1895 and in Nova Scotia the following year.

This incomplete volume contains an alphabetical list of family names, with some colored sketches of coats of arms.

These are 94 pages of notes, by an unknown author, pertaining to the first and second classes of zoology.

This collection includes certificates issued primarily by railroad companies, banks, and industrial companies. There are some bonds issued by the City of Philadelphia. Also of interest are the scenic engravings of railroads on the certificates.

The anonymous compiler of the Vocabulaire Chacta, ca.1820, gathered 149 elementary words in the Choctaw language with French equivalents, the basic numerals, and six "useful" (if not always appropriate) phrases. Arranged alphabetically by French. The notebook was donated to the American Philosophical Society by Peter Stephen Du Ponceau in 1827.

Sak and Fox words with their English equivalents. A note inside the back cover states "C.S.F. to Mrs. S.," asking her to excuse the "erroz in Spelling They are not mind (sic.). written on the night of my return from a memorable Expedition."

This is a manuscript dictionary, apparently of the Mandingo language, with latin equivalents.

This volume was kept by a student at West Nottingham Academy and contains problems in algebra.

This volume is chiefly devoted to problems involving fractions, as well as a smaller section on geometrical proportions.

This volume includes definitions and problems on parabola, ellipse, and hyperbola.

This volume contains "solutions of the practical problems in [John] Gummere's astronomy."

This item, by an unknown author, presents an astronomical sketch of eclipses, some of which could be seen from Philadelphia and Canton, China.

This volume includes prescriptions for various complaints, such as epilepsy, hemorrhoids, and ringworm.

This manuscript is by an unknown author who was coming to America to live. It records his voyage from Liverpool, England, to Philadelphia.

The Congo Free State was formally established in 1885 under the Belgian King Léopold II. With the use of forced labor, the governors rapidly developed agriculture and mining during their repressive twenty year administration, making the Free State the world's largest exporter of rubber by 1903. However due in part to international opposition to the abuses of power, the Free State was annexed to Belgium by act of parliament in 1908. The essay L'État Indépendant du Congo was written by an unknown Belgian some time during the period 1895-1908. Apologetic in tone, it discusses the political and social organization and religion of the Congolese natives, the geography and productions of both Bas Congo and Haute Congo, and the civil administration.