Churchill No. 1 Centreless Grinder (also sold as the BSA No. 4G) Detailed Operator's Manual with numerous sectional drawings and an electrical schematic.

BSA No. 4 and 4G Centerless Grinder (also sold as the Churchill No. 1) Detailed Operator's Manual with numerous sectional drawings and an electrical schematic.

BSA-Huller Electrically Operated Tapping Machines (1, 2, 3 and 5) Operating Instructions with Sectional Drawings.