Meanwhile, back in 1848 Salmon had published an undergraduate textbook entitled "A Treatise on Conic Sections". This text remained in print for over fifty years, going through five updated editions in English, and was translated into German, French and Italian. Salmon himself did not participate in the expansions and updates of the more later editions. The German version, which was a "free adaptation" by Wilhelm Fiedler, was popular as an undergraduate text in Germany. Salmon also published two other mathematics texts, "A Treatise on Higher Plane Curves" (1852) and "A Treatise on the Analytic Geometry of Three Dimensions" (1862). These too were in print for a long time and went through a number of later editions, with Salmon delegating the work of the later editions to others.