Kearney & Trecker Model 2D Rotary Head Milling Machine. Not a manual but a detailed Catalogue that explains the working of the machine and how to employ it. 18 pages.
 
 

Adcock and Shipley 2, 2B and 2D Horizontal Milling Machine. Maintenance and Operator's Instruction Manual with fold-out Engineering Drawings of mechanical components and circuit diagrams

Kearney and Trecker Model 2D Milling Machines (Rotary Head type): Instruction and Maintenance Manual - later full edition with Appendix for power drive to the knee and revised lubrication instructions.

Kearney and Trecker Model 2D Milling Machines (rotary head type): Parts Manual as Sectional Drawings.