Berlin: Herrm. Hadorff & Co., ND (ca 1910). First edition. Softcover. Oblong 24mo (5 1/2 x 8 3/4").  leaves (Title and Text),  leaves (Plates). Original string-bound wrappers, with white lettering and Otto Sorge's logo to front cover.
Extremely well produced trade catalogue of Otto Sorge, a Berlin based manufacturer of cooling, and condensation control systems.
The splendid 57 photogravures contained in this work depict machines and other apparatus manufactured by Otto Sorge, as well as views of factories and other businesses using Otto Sorge's cooling, or condensation control systems.
Lettering on front cover slightly and partly faded. Text in German. Wrappers and interior in overall very good condition. vg. Item #43446