Ingersol-Rand SSR-2000 rotary Screw Compressors. Operator's Instruction and Maintenance Instructions including Electrical Schematic.

Ingersoll (USA) "Installations of Milling Equipment". "Wonderful publication, circa 1900-1910, showing the use of large milling machines.

INGERSOL Automatic Cutter Grinder. Detailed Sales & Technical Specification & Accessories Catalogue with clear details of how the machine functions and its various possibilities. 25 pages.