Can anyone identify these boards?
http://sturgeon.css.psu.edu/~mloewen/DSC01381.JPG
http://sturgeon.css.psu.edu/~mloewen/DSC01382.JPG
http://sturgeon.css.psu.edu/~mloewen/DSC01463.JPG
They're stamped IBM, with etched numbers LBJ5360, LBJ5403 and LKJ12470.
The owner says they were given to him in 1978, and were supposedly from
North Bay, Ontario.
Mike Loewen mloewen at cpumagic.scol.pa.us
Old Technology
http://sturgeon.css.psu.edu/~mloewen/Oldtech/