Thanks so much for sharing this information. You could hardly bore us with what you have presented here and, in fact, you are helping to preserve some of the knowledge of what others have done. At one point much of this info on steam engines was normal, everyday stuff, but now most of it is in danger of being lost because it is assumed that someone else has preserved it somewhere. (Computers aren't that old, but there is still much info that is forever lost...)
Wish I had more information about the pictures a friend used to have from when ALCO (American Locomotive Corp.) had its huge plant in Dunkirk NY, a few mile from where I grew up. He had some newspaper pictures with 20 or more of the large 4-8-8-4 locomotives all on the shop floor at the same time in various stages of production. An I think that was just 1 shop...
KF2QD, South Texas
HF MiniMill, HF 7x10
Hardinge UM, Enco 12x36