I have no connection with ENCO, but just noticed they have a sale on the Moltrecht "Machine Shop Practice" books, Vol 1 & 2 at $16.95 each, and Jones "Machine Shop Training Course" Vol 1 & 2 also $16.95 each. These are excellent basic texts for the home shop machinist, either experienced or beginner.
The 4 volume set of "Ingenious Mechanisms" is $78.95.
"Machinery's Handbook" $59.95.
They also have "Heat Treatment, Selection and Application of Tool Steels" at $31.49. Might answer some questions posted here recently.
Sale ends 12/31, www.use-enco.com