Mathematical notebook attributed to Thaddeus Mason Harris, ca. 1787

Hardcover notebook containing handwritten transcriptions of rules, cases, and examples from 18th century mathematical texts. The author and purpose of the volume is unclear, though it has been connected with Thaddeus Mason Harris (Harvard AB 1787). Most of the entries include questions and related answers, suggesting the notebook was used as a manuscript textbook and workbook. The extracts appear to be copied from John Dean's " Practical arithmetic" (published in 1756 and 1761), Daniel Fenning's "The young algebraist's companion" (published in multiple editions beginning in 1750), and Martin Clare's "Youth's introduction to trade and business" (extracts first included in 1748 edition).

Letter from William Croswell to Charles Stimpson, 1821 March 5

Draft of a one-page letter regarding Croswell's maps of the stars.

[Admittatur of Charles Brooks], 1812 September 23

Published copy of the 1807 College Laws with the admittatur of undergraduate Charles Brooks signed by President John Kirkland on September 23, 1812.

[Admittatur of Charles Jarvis], 1817 October 11

Published copy of the 1816 College Laws with the admittatur of undergraduate Charles Jarvis.

[Certificate of admission of Charles Ammi Cutter], 1851 July 15

Photocopy of an abstract of laws and regulations, and the certificate of admission of undergraduate Charles Ammi Cutter signed by President Jared Sparks on July 15, 1851.

Collection of Harvard College quarter bill and butler's bills sent to Charles Davis, 1793-1796

This collection consists of one quarter bill and three butler's bills, all sent to Charles Davis while he was an undergraduate at Harvard College. The quarter bill is from August 1795 and the butler's bills are from February and November 1793 and July 1796. John Pipon and Timothy Alden were the butlers at this time, and Caleb Gannett was the steward (responsible for the quarter bill).