Letter from David Hume, Esq. to the author of The delineation of the nature and obligation of morality, David Hume. Letter from David Hume, Esq. to the author of The delineation of the nature and obligation of morality Hume, David, 1711-1776. 5,[1]p. ; 8⁰. [Edinburgh?, 1795?] The author of The delineation of the nature = James Balfour. Drop-head title. The paper is watermarked: 1794. Reproduction of original from the Harvard University Houghton Library. Goldsmiths', 16530 English Short Title Catalog, ESTCN4546. Electronic data. Farmington Hills, Mich. : Thomson Gale, 2003. Page image (PNG). Digitized image of the microfilm version produced in Woodbridge, CT by Research Publications, 1982-2002 (later known as Primary Source Microfilm, an imprint of the Gale Group).