[COFF] DEC PDP-x Disks pre 1970

Greetings, I'm looking for a list of all hard disk drives that DEC supported prior to ~1970 or so as part of some research I'm doing for my talk this fall in Lillehammer. so far, I've only found one listed in a pdp-9 brochure (the RB09 listed in the PDP-9 handbook). Are there others? I've seen a reference to an RA01, but have seen no details on it. It appears that Rx## is the pattern to look for in that era. Alternatively, if someone can articulate the XX## naming scheme of the time, that would be great. I've seen Dx## for different communications modules, for example, but don't know if I can generalize. Warner