Holograph manuscript titled "Cours de calcul integral" by Auguste Bienaimé Désiré Pioch (1812-1846). Bound with his "Memoire sur les fonctions arbitraires exprimes par des integrales doubles" [G3145]. Taken from Tome XV of Memoires Couronnes, Academie Royale de Bruxelles.

One manuscript copy (1 vol. 347 pp.) of Euclid's elements of geometry being an abbreviation of Mr. Cunn's edition of the 1st, 2nd, 3rd, 4th, 5th, 6th, 11th and 12th books in which the verbal demonstrations are greatly abridged and the figures for their elucidation laid down with accuracy, so as to be proved by scale and compass, by James Horne, son of Richard Horne, First Clerk of the Admiralty. Two bookplates, one of W.R.B. Osterholt and one of Henry Buxton Forman.

One manuscript copy (1 vol. 348 pp.) of Lorenzo Mascheroni's Geometrical problems resolved by means of compasses or by the mere description of circles translated and with additions by A.B. Lousada, Devonshire, 1820. Also includes bound in original plates with diagrams.

William Tutte's manuscript notebook from his time as a student at Trinity College Cambridge. Manuscript includes graphs and formulas regarding the Four colour theorem or the Four colour map theorem (considered the central problem in graph theory). Notebook includes a folder with annotations made by Tutte referring to the content and pages with his annotations divided into twelve sections.