Handbook of narrow-gauge equipment, 60-centimeter, for 12-inch mortar railway mount, model 1918. April 23, 1919. - Washington, Govt. Print. Off., 1919. - 39 p. 14 fold. plates. 23 cm. At head of title: Form 2025. LCCN: war19000038 Subjects--Corporate Names: United States. Army --Transportation. Subjects--Topical Terms: Gun-carriages. LC Class. No.: UF563.A76 / A5 12 in. 1919