Huge thanks to everyone who helped check out the group's disk drives and who helped us save warehouse space + increase budget by adopting some of the excess!! A personal thank you to David G. for the PDP-8 operation lesson. I previously understood the very basics of how front-panels tell a computer what to do and how they report the output back to users -- enough to satisfy most museum visitors who ask simply, "How does the [Altair / PDP-8 / etc.] work>" -- but David sat me at the controls and answered all my questions about how to actually enter his chasing-the-lights demo program, verify it, and run. He also showed me the 8's interior "restart" switch, so I can demonstrate core memory keeping its data after the computer is restarted. I'll need some more practice (any recommendations for a web-based or Linux emulator?), but now I feel pretty comfortable that I can teach this same simple lesson to others.