Railroad engineer (1826–1863) who was a driving force behind the building of the transcontinental railroad. Signed book from his personal library: Scribner’s Engineers’ and Mechanics’ Companion. Later printing. NY: Huntington and Savage, 1847. Hardcover, 4.25 x 6.5, 240 pages. Signed in pencil on the first free end page, “T. D. Judah, Civil Engineer, Pleasant Valley, NY, Dec 1st., 1847,” and also signed again in pencil, upside down on the last free end page, “Theo. D. Judah, Greenfield, Mass.” The opening and closing pages also bear several mathematical computations and sketches, all in pencil as well. Two of Judah’s personal nameplates are also affixed inside the book. Professional restoration and reattachment of both covers, uniform light toning to pages, creasing, damp staining, and toning to pastedowns, partial separations along hinges, and creasing and slight peeling to label, otherwise very good condition. Book comes in a custom made clamshell box. RRAuction COA.