Blake and Knowles Works East Cambridge Mass. Bulletin BK-3002 April 1918 : 10 x 18 x 12 Vertical Single-Acting Beam Air Pump with One Simplex Style "A" Steam Cylinder Type Built for Merchant Vessels :Points on Installation ad Operation with List of Parts [cover title]. Worthington Pump, Machinery Corporation.

Blake and Knowles Works East Cambridge Mass. Bulletin BK-3002 April 1918 : 10 x 18 x 12 Vertical Single-Acting Beam Air Pump with One Simplex Style "A" Steam Cylinder Type Built for Merchant Vessels :Points on Installation ad Operation with List of Parts [cover title]

New York City: Worthington Pump and Machinery Corporation April 1918. First Edition. 12 pages. 9 x 6 inches. Self wrappers, with two holes punched at the spine. Previous owner name on front cover. Very Good. Wraps. [28558]

Price: $30.00