These papers consist chiefly of essays presented by the members, with such titles as "Ambition," "On Avarice," "State of Literature in the United States," and "Consequences of the French Revolution." Also included are several letters, including one from Benjamin Say, Jr.

This notebook contains short essays on various topics, such as public singers ("the Mountebanks of the Voice"), the embarrassments of public men (Daniel E. Sickles and Philip Barton Key), songs, wit, wealth, suicide, Benjamin Rush, "that little sneak Kossuth," and modern authors ("the present wretches of the pen").

Personal and professional correspondence of the chemist Robert Hare, including drafts of letters to editors of journals on such varied topics as fish guano, slaughterhouses, paper money, and the meaning of the term "Yankee annexations." The collection originally contained over 300 scrolls, since disbound, which contained drafts of letters, essays, and lectures, composed by Hare on ordinary sheets of paper, then pasted end to end, and rolled up. The essay and lecture topics include: chemistry, storms, slavery, currency, fire-fighting, capital punishment, railroads, the Smithsonian Institution, Michael Faraday, religion and Spiritualism, riots in Philadelphia, epidemics, underwater blasting, and Ralph W. Emerson; there is some verse. The collection also contains an account book of Hare and his wife, 1806-1829 (180 pp.; B/H22#3); a volume by Hare on Cyclones (tornadoes), n.d. (ca. 60 pp.; B/H22#4); and Samuel Powel, Jr.'s "Short notes on a course of antiquities at Rome... under M. Byre Antiquarian," 1764. (60 pp.).