I can't say on that. BE was sold off. Part of it went to Cat, and part went to Sparrows Group (and then they combined with someone else). I believe Cat just wanted the mining side, so Sparrows might have gotten the crane info. I've never tried to chase down anything official.
A copy of the op manual would be ok probably. The parts manual, you would likely want an original as the line drawings really need to be clean/clear to see the detail. It's not that you can order the parts, because everything has a BE part number that's useless, but being able to see the detail can be extremely useful.
I've taken a few photos of specific pages for people that came out ok, but I haven't done a complete set.