| Title | Contributions to the history of the steam engine, being two deeds relating to the erection by Messrs. Boulton & Watt of steam engines on the United Mines at Gwennap, Cornwall, and at Werneth Colliery, near Oldham, Lancashire. From the originals at the Patent Office Library. 16pp. 1872. BOULTON (MATTHEW) Works relating to. |