I finally found a copy of Cliff Joyce's masterpiece "Calculator Construction Set" thanks to waynes.com. I haven't tried it yet (I really don't want to unshrinkwrap this rarity!) but can't wait to play around with it, especially since I tutor mathematics and would love to have customized calculators available for the students for certain units/applications.

Let's add Wayne's to the list of good vintage Mac vendors alongside B&R Computer and Herb's Mac Stuff. The guys were top-notch and I will definitely do business with them again in the future.