Looking for info on Bucyrus-Erie 42-B steam crane/shovel

Hi all, I'm looking for old catalogs, operator/repair manuals, sales brochures for the Bucyrus-Erie 42-B steam crane/shovel. So far have not found much of anything besides some old print ads and repro signs for that model B-E machine. Lots around on the type B and B-2 steamers. The 42-B was from around 1930 so one of the later steam powered machines. Looking to find/buy/borrow/get copies of any old manuals on the 42-B. All help appreciated! Thanks, Chris