Might have been written in 1929, but still amazingly relevent, including an area on Quality Assurance before the term was ever invented.
It's the book that I have had the most letters from the library, generally one overdue notice per annum as I re-read it.
Went to a daddy/daughter father's day Girl Guides evening at the Small Arms Factory museum, and saw that it's been reprinted.
http://www.lithgow-tourism.com/samuseum/index.html
Daughter saw my surprise when I saw the reprint, and asked her Mum if she could get it for me for Christmas.
http://www.naval-military-press.com/textbook-for-small-arms-1929.html