Union Twist Drill Company Manufacturers of Milling Cutters, Gear Cutters, Twist Drills, Hobs, Reamers, Machine Tools, Catalog N: January 1939 (Reprint January, 1942)
Union Twist Drill Company, 1942. Hardcover. 8vo - over 7¾" - 9¾" Original green cloth stamped in gilt (some rubbing). Taped in at front is Union Drill's 8-page 'Union End Mills: Double End, Single End, Ball End.' June 1, 1941.B/w Illustrations. More