DUFOUR (Garsten Dufour) 221R Milling Machine. Operation & Maintenance Manual with Parts Manual as Exploded Component Drawings. Not perfect, but a readable copy.

DUFOUR (Gaston Dufour) 221N and 221R Milling Machines. Sales and Technical Specification Catalogue. 12 pages

Gaston Dufour 220, 221, 211N and 221R  Milling Machines: Operator's Instruction and Maintenance with Parts as Exploded Component Drawings and an Electrical Schematic. Gaston Dufour 220, 221, 211N 7 221R. Milling Machine: Operator's Instruction and Maintenance with Parts as Exploded Component Drawings and an Electrical Schematic.