I belong to a category which seems to have 'read it all before' and because there is so little which is new, I have given up paying money for someone else churning out what somebody did better- then.
Basically, I have what can be described as 'standard textbooks' , I have Machinery's Handbook( 1941 edn), I have Holzapfell which contains everything, I gave away Advanced Machine Toolwork by Smith( a great book) and Tubal Cain, George Thomas, Martin Cleeve and Chaddock. I have my dog eared copy of Sparey from my days when I played with 12" to the foot models- in 1948- and some are still airworthy.
Basically, that is more than enough for most people but perhaps with a double sliderule and a set of log tables!
Once you understand Euclid and the greats from a distance past- and you can stumble through these , there is little today that evokes a stifled yawn. My only wish is that I could appreciate the old stuff more than I do.
Oddly, I am not alone in this view.
Cheers
Norman