I picked up a sack full of these <http://www.classiccmp.org/hp/PDP-8%20cards/cab-kit.jpg> last week. Thom says that they're valuable but I was just going to rob so parts out of them. If they're worth much I'll use them for trading material or E-bay them. if they're not worth much, I'll just pull the parts that I want and pitch the rest. Joe