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).

Notebook concerning mathematical equations : manuscript, 1769-1774

Notes on measuring height and distance, trigonometry, spherical projection, and other mathematical equations. Probably William Winthrop (1753-1825; Harvard AB 1770).

Essays : manuscript, [17--]

Essays on the dispersion of mankind, the Council of Trent, the invention of writing, and other topics.

Documents: concerning North American Atlantic coastal areas : manuscript, [17--]

Acts, reports, petitions, court opinions, and other documents, spanning 1680-1725, concerning Antigua, Barbados, the Carolinas, St. Christopher [Saint Kitts], Jamaica, New York, Virginia, and other areas on the Atlantic coast.

Voyage et campagnes au Canada / par M. le chevalier de D. L. P. : manuscript, 1757-1760

Describes his voyage to Canada from Brest, and his observations of military operations and Indians while in Louisbourg, Québec, and Fort Carillon.

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."

Sermons : manuscript, 1788-1791

Nine sermons concerning Revelations 7, Hebrews 7, Psalms 174, Matthew 16, and other chapters, delivered chiefly at Hampton, New Hampshire. Includes an epitaph in memory of Thayer.

Septenary : manuscript, 1737-1745, 1755

Diary dated 1737 Sept. 19-1745 Aug. 19, chiefly concerns Robbins' personal religious faith. Also includes notes for a sermon on the death of Maj. Isaac Foot, who died in the French and Indian War.

Of the invention of theorems : manuscript, [17--]

Mathematical notes, equations, theorems, and definitions. Probablynot by William Winthrop (Harvard AB 1770) as it is different handwriting and language habits from other of his manuscript.

Elements of geometry : manuscript, 1798

Contains work on geometry, trigonometry, surveying, mensuration of heights and distances, and navigation. The graphs and diagrams illustate story problems and navigational examples.

Sermons : manuscript, 1689-1690

Contains sermons, chiefly by "Mr. Gookin," delivered 18 Aug. 1689-23 Feb. 1690, on faith, theft, adultery, obedience, and other topics. Probably by Nathaniel Gookin (1636-1692; Harvard AB 1675).

Tabulae solares ex theoria gravitatis, et observationibus praecipue Gottingensibus deductae: Adjectis nonnullis aliis tabulis astronomicis / auctore Tobia Mayer : manuscript, [17--]

Astronomical tables concerning the sun and moon, longitude and latitude, with predictive calculations to the year 1807.

Sermons : manuscript, 1709-1722

64 sermons on verses from John, Proverbs, Revelations, Matthew, and other books of the Bible, with notation of dates and places delivered in and around Boston.

Rule of three : manuscript, 1774

An arithmetic copybook, with accounting problems concerning commercial transactions. There is a reference to the Boston Tea Party in problem no. 68.

Sermons : manuscript, [16--]

Sermons concerning passages from Luke, Matthew, Ephesians, Isaiah, and other books.