De Morgan Papers Letters of Augustus De Morgan and Sophia Frend (later Mrs Sophia De Morgan) to and from family and friends. Includes one letter from Augustus De Morgan to Miss Frend (undated) and one letter from Miss Frend to De Morgan (1836). Script of a comic play, dedicated to De Morgan, about his teaching of mathematics (author unknown). Manuscript copy of "A Poetical Epistle addressed to Miss Wollstonecraft by John Henry Colls", dated Oct 4th '95 and copies of letters from Luther Martin to Thomas Jefferson (originals 1797, date of copy unknown). A poem about the British Association [for the Advancement of Science], dated August 1836 (not De Morgan's hand). Various other miscellaneous notes and verses, including a letter from De Morgan to Sir Jonathan Pollock Correspondence between De Morgan and Sophia Frend (two items), 1836 and undated; letter from De Morgan to Sir Jonathan Pollock, 1865; miscellaneous undated verses. 1836-1865