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.

The invention of letters annotated by Charles Pinckney Sumner, ca. 1795-1796

Interleaved second-edition copy of Robert Treat Paine's poem "The Invention of Letters" with handwritten excerpts of 18th century poetry copied by Charles Pinckney Sumner. The excerpts appear to be verses alluded to, or emulated, by Paine in the poem. For example, Paine's verse includes "Beneath the shade, which Freedom's oak displays" and Sumner on the opposite page quoted Alexander Pope's poetry, "Beneath the shade a spreading beech displays." The excerpts include poetry by Alexander Pope, James Thompson, Robert Dodsley, William Falconer, William Hayley, Samuel Rogers, Richard Brinsley Sheridan, Thomas Gray, and John Denham.