Brian wrote...
  Speaking of software and hardware for those machines,
what
 about *new* software and hardware programmed / created for vintage
 systems?  For instance, Mike Loewen had a card reader interfaced to
 his laptop via USB port at the last VCF east.  That demonstation did
 a great job of showing me how punch cards were used. 
Absolutely completely
on-topic. Sure, it involves a modern USB sporting
laptop. But obviously the focus is classic computer related (punched cards
are obviously classic, and there was likely a mediapreservation/educational
component as well).
Also on-topic is software and/or hardware emulators of classic computers,
interfacing modern peripherals to old systems, interfacing old peripherals
to modern systems, etc.
Also on-topic is electronics discussion directly related to repair and/or
theory/understanding, cleaning methods, procurement, etc. etc.
Jay