Luger books and references recommendations?

[Wastoute]

Don, on his website mauro states they have many glass plate photographs of the manufacturing process. So they DO exist. We MAY GET our "tour of the factory". These kinds of photos also show incredible detail.

It occurs to me that if these plates could be digitized and a volume created that "amateur investigators" could have access to (sort of "crowd sourced") and comments discussed it would be possible to assemble a sequence of photos with narratives that would demonstrate every small detail. It may only be of interest to a few but for those few absolutely thrilling.

When I was a machinist decades ago I just wasn't interested terribly in metallurgy or the history of metal working, it was just a paycheck. I had to learn some of it "for the test" but it just wasn't relevant. Now I am curious as can be. I just read that High Speed Steel wasn't even invented and introduced until 1910. How in the world did they makes these parts before that?