B+H IRIS boards

I recently found some Bell+Howell Iris boards in the dumpster behind a local computer repair place. They are 3 piggyback boards that fit in two PC(?) slots. One board is labeled "CPU" and has socketed TI 34010 Graphics Processor, socketed Bt454KPJ170 chip, a boot EPROM, and two different sets of 32 RAM chips (511000P-10 and D41264V-15). The EPROM is (c) 1986, the boards 1987 and 1988. There is a coax connector off the first board. The second board is labeled "Iris Printer/Scanner" and has a 26 pin header. The third board, which has a SCSI port, is labeled "Iris Decomp". Since these boards are sandwiched close to the first, I cannot see what is on them without taking them apart. I have 4 complete boards and one without the 2 socketed chips. Does anyone want one/more of them? You can have one for the cost of shipping. They weigh just over 2 pounds, so shipping would be $5.00 or a bit more. I gather that they are some sort of scanner interface/processor, but does anyone know more about them? Bob Feldman