These are transparencies made for use with talk at the 1987 conference in Boston.
Very old, in a green accopress binder, look like they are done with a typewriter, or very old software. I scanned them, but have no record of sending them to the GMU collection, probably threw the hard copy out to save cupboard space at home, and just kept the computer files..
R..w. circa 2011, updated Dec 30, 2015