Letter from William Croswell to the Masters of Mason Street Schools, 1832 March 8

Draft of a brief letter complaining about students.

Agreement between John Lowell and John Walton, Thomas Mason, Joseph Holmes, and Samuel Mason to finish the basement of University Hall, 7 June 1814

This contract includes stipulations for finishing the two kitchens, windows, and floors in University Hall by the first of August 1815.

List of books donated by Thaddeus Mason, undated

This list specifies which books were designated for the "small library" and which were for the "great library."

Student essay composed by Thomas Mason, 1796

Three-page folio-sized handwritten student essay composed by Thomas Mason as a Harvard undergraduate. The verso of the last page is inscribed "Mason February 1796." A quotation from Edward Young appears at the top of the first page: "Heaven gives us friends to bless the present science; / Resumes them, to prepare us for the rest." The essay discusses friendship and the death of friends, and begins, "The author of our nature has so constituted it, that pleasure is unknown without the intervention of pain."

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).

Letters from Jonathan Mason to William Tudor,

Two letters on topics such as Mason’s search for original documents relating to the Constitution and the admission of Missouri to the union as a slave state.

Thaddeus Mason Harris' working documents regarding subject-based library catalog, ca. 1790

Thaddeus Mason Harris, who served as interim librarian of the Harvard College Library in 1787 and as its librarian from 1791 through 1793, is believed to have created these notes while helping compile the library's first printed subject-based catalog. The catalog, Catalogus Bibliothecae Harvardianae Cantabrigiae Nov-Anglorum, was published in 1790 and represented a significant change in approach to the cataloging of the library's collections, which had formerly been cataloged alphabetically. These documents, many of them on small scraps of paper, contain the titles and bibliographic information of books on a range of topics, from "Anatomici" to "Rhetorica."