Hi,
Ismacs sewing machine manuals list may be of help.
http://ismacs.net/free-sewing-machine-manuals-list.html
Also, I have lists on the OCLC Worldcat catalog site: it covers all published books catalogued in the world's catalogs.
I have one list on industrial sewing machines, in case there's something there. It does go from basic to examinations on machines. Also lists on bespoke shoemaking/bootmaking. I know I have missed some main books but am still working on them.
https://www.worldcat.org/profiles/hvxsilverstar/lists
Bernadette
