Software/documentation for the LSI-11 inside a Bridgeport Series II CNC milling machine?

Hi, All, I was helping someone in town with some motor issues on their circa-1980 Bridgeport CNC mill for which they fortunately have many original docs. I was tremendously surprised to find that there's an LSI-11 in the heart of the CNC cabinet. The docs have schematics, register maps, etc., and even instructions for how to use the Bridgeport punched-tape-loadable diagnostics. Fortunately, this unit has the optional punched-tape reader. Unfortunately, it has no tapes. I've done some cursory looking around and little is leaping out at me (except frequent mentions of folks who have upgraded away from the original CNC package). I'm wondering if anyone on the list knows where to pick up images of the diagnostic software for this thing. Thanks for any tips or hints. -ethan