Self-Help Mechanical Drawing: An Educational Treatise, by N. Hawkins, M. E. (HC oversize, $5, which is 1/3 the internet price.)
"Learn to do a thing by doing it."- Old Proverb
"The author is prompted to undertake the rather pleasant task of producing a self-help book relating to the subject. Since the days of youthful endeavor, the author has passed through an extended experience of mechanical life, and scarcely ever without chalk, pencil, or instrument in hand, to illustrate by sketch or drawing, the tools to be employed, or to picture the finished product, accordingly, throughout this work, words of explanation and the drawings will go together to aid the diligent student."
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Those were the days. How long has it been since mechanical drawing has been done with chalk? Does anyone even use a pencil anymore? What instruments was he referring to? Look for this book on the new non-fiction table. (L- eng.)