Pertec tape interface for PC

I picked up a nice, small, 9-track tape drive made by Qualstar for use with IBM PCs. The fellow I got it from said he had the ISA adapter and software and manuals "somewhere in a box". Of course, he can't find them, and it's the adapter and software that I'm really after, since Pertec-interface 9-track drives are fairly common. (I'd like to think this isn't the old "promise the important stuff to have someone haul away the big stuff" ploy, but it's happened to me several times now!) Pehaps someone out there has one, or knows the whereabouts of an ISA Pertec adapter, probably made by Qualstar, Chi Corporation, or Overland Data. Software and docs to go with it are almost mandatory, and anything that runs under DOS/Windows or any flavor of PC Unix is OK. Thanks, Dave