8vo. [4], v-xix, [2], 2-204 pp. Navy cloth with gold lettering on the spine. Price of $5.75 on the front flap of the dust jacket. Illustrated with in-text diagrams, several of them in color. Edited by G. H. von Wright, Rush Rhees, and G. E. M. Anscombe. Translated by G. E. M. Anscombe (original German text on the versos, English translation on the rectos). Frongia 44. The second of Wittgenstein's posthumous works to be published (following Philosophical Investigations), a compilation of notes concerned with issues in the philosophy of mathematics written during the period of 1937-1944. Jacket with a small closed tear and toning to its spine panel.