There's a small bit of info on Cameraquest and if you search google for the Exacta mount versions you can find a bit more (the 85, at least, was optically the same across mounts). I'm struggling to find info on the 35/4.5 they made in LTM. I know where one is at a semi-sane price and I keep getting bad ... "urges"... 😀
Everything I have seen about the 85/2.8 is that it's an highly underrated screamer. If you have a good one, you are a lucky individual. Enjoy it!
William