Notas acerca de los sistemas telegráfico, telefónico y de señales eléctricas instalados en los ferrocarriles de los Estados de Prusia y de Hesia

Berlin: Siemens & Halske Soc. Anón, 1904. Hardcover. [6], 73, [1]p., illustrations, boards. 13x10 in. Bound in publisher's green cloth over semi-stiff boards, stamped vignette and title on front cover. Very Good. An elaborate and detailed presentation prepared for the appearance of this German firm at the St. Louis International Exposition. Shown and discussed are the communication and signaling systems that Siemens & Halske designed and installed for the Prussian and Hessian state railroads. Rare sales monograph published here in Spanish.