c. 1840—Paris, France

Hartman’s Méthode elémentaire de trombone includes the following information about the pitch and usage of the alto trombone: “There are three types of trombones, alto, tenor or bass, and contrabass. The alto trombone is in E-flat, a fourth above the tenor, tenor trombone is in B-flat, and contrabass trombone in E-flat, a fifth below the tenor trombone. The tenor trombone being nearly the only one in use, it will then be, without question, only about this [one] in this work.” The method book is dated by University of Cambridge’s library catalog as c. 1840, and by Trevor Herbert as “1845?” (Hartman, Methode; Herbert, The Trombone 327).