I found the book after I got it back together.
My liberal friend tries to work on his car. I keep telling him to do enough research before he starts so he is taking the right end apart. He took out the rear axles for what turned out to be a valve under the hood.
After years in aerospace I am cagy about doing anything I can't prove is prudent.
The "damn the torpedoes, full speed ahead" attitude works better at lots of things, the disassembly of an unknown gun is not one of them.
When I take apart a complicated gun, I GOOGle search, I look at my gunsmithing books, I take pictures, and practice putting it back together, taking if further apart each time.
Sometimes I even have to go buy another gun to see what it SHOULD look like.
Life would be easier if there were a youtube on Win 1895 disassembly / assembly.