What a great old book on Machining and shop practices.  Machine Shop Operations from 1942, by J. W. Barritt.  It is a hardcover, and over 2" thick.  it is full of information on drilling, forging, milling, sawing, broaching, and much more.  it is in good condition, with yellowing as can be expected.  There is a tear on the very first page, as can be seen in one of the early pictures.  No writing.  Please feel free to ask questions.