Duplicating non-standard software media

I want to back up some 5.25" Xerox ViewPoint installation diskettes, but I don't have a working D-series system. Does anyone have a pointer as to the best way to make this happen? I thought I remembered a utility out there that did diskette bit-copies. Even better, if I could find a utility to read the diskette and store it to some sort of image file that I could burn onto CD, I could restore the software to diskette later. I have a Victor 9000 system in the computer barn with a 5.25" drive. I believe it's in running condition, though I haven't fired it up since I got it. IIRC, it runs some early version of MS-DOS or possibly CP/M. Then again, I think the Victor did some weird stuff with the diskette drive speed to increase the amount of data it could write to a diskette. Hmm, I'm sure I can track down a box with a pair of 5.25" drives. Any suggestions? -- Tony