SIMPSON, THOMAS. Essays on Several Curious and Useful Subjects, In Speculative and Mix'd Mathematicks. London: H. Woodgall, for J. Nourse, 1740; Mathematical Dissertations... London: For T. Woodward, 1743; Miscellaneous Tracts... London: For J. Nourse, 1757. 3 engraved folding plates. 3 works in one, 4to, contemporary calf, joints cracked; some scattered foxing and browning -- SIMPSON. A Treatise of Algebra...Third Edition, Revised. London: For John Nourse, 1767. Numerous diagrams in text. 8vo, contemporary calf, joints cracked, worn; dampstained. (2)