The Elements of Euclid, The errors, by which Theon, or others, have long ago vitiated these books, are corrected, and some of Euclid's demonstrations are restored. Also, The book of Euclid's Data, in like manner corrected.

The Elements of plane and spherical trigonometry. Philadelphia: Printed for, and published by Mathew Carey, no. 122, Market-Street. 1806": p. [479]-518."Euclids Data. In this edition several errors are corrected, and some propositions added. By Robert Simpson [!] ... Philadelphia: Printed by Wm. F. M'Laughlin, no. 28 North Second Street. 1806": p. [363]-477."Notes, critical and geometrical: containing an account of those things in which this edition differs from the Greek text, and the reasons of the alterations which have been made. As also observations on some of the propositions. By Robert Simson ... Philadelphia, Printed by Thomas and George Palmer, 116, High Street. 1806.": p. [295]-362.Mode of access: Internet