Tango Schematic capture, PCB layout and autorouting programs

I was in a library book sale store yesterday and found the complete packages for Tango Schematic (schematic capture program), Tango Route Plus (autorouting program) and Tango PCB Plus (PCB layout program). These date I was out of money so I went back early today to pick them but someone had taken the Tango Schematic. The funny thing is that all three were in a box together and they didn't take the other two. What's nore, they require a dongle and the dongle was in the Tango Route package so they can't even run the Schematic program. I went ahead and got the other two programs. Has anyone got a copy of Tango Schematic that they're willing to part with? Why was I out of money? Because they also had "Bit-Slice Design: Controllers and ALUs" by White and "Bit-Slice Microprocessor Design" by Mick and Brick and some other GOOD books and I spent my money on those first. FWIW both of these bit slice books are VERY good and very easy to understand. I highly recommend them. One of my other COOL finds there was a September 1977 issue of Scientific American. It's filled with articles about microelectronics (almost completely computers). There's also a LOT of ads from the various S-100 computer manufactures. BUT the coolest thing in it is an article (Microelectronics and the Personal Computer) by Alan Kay. Alan was one of the guiding lights at XEROX PARC. This article has a pile of pictures and information about XEROX's then experimental graphical computers. It even mentions a new pointing device called a mouse. Does anyone know what that might be? :-) Joe