Card Reader!!!

I'd spotted the rack Jim mentioned yesterday in my wanderings before he posted about it here, and today I decided to go pick it up. Good thing I did, as I was out in front of the store, pulling the drives out of it so it would be easier to handle, I got to talking to this old guy. We got to talking about old computers, and it turned out he had a card reader he didn't want/need any more. So I went over and picked it up. It's a nice small unit, that can easily sit on top of a desk. The only problem is I'm not sure how to interface it to anything. It was made by "Peripheral Dynamics Inc", and is a Model C302 manufactured in May of 1972. I think you're supposed to interface it by plugging some sort of card into a connector in the back of it. Unfortuantly he didn't know where the manual is, or if he still has it. Does anyone know how to hook one of these up to anything? Ideally I'd like to be able to attach it to a Unibus system or a PC. Zane | Zane H. Healy | UNIX Systems Adminstrator | | healyzh(a)aracnet.com (primary) | Linux Enthusiast | | healyzh(a)holonet.net (alternate) | Classic Computer Collector | +----------------------------------+----------------------------+ | Empire of the Petal Throne and Traveller Role Playing, | | and Zane's Computer Museum. | | http://www.aracnet.com/~healyzh/ |