Oh wow. I think I'm gonna order one of these on payday. I love old phone system / computer stuff. Anybody else know of similar 50s/60s "training kits" ? http://www.navyrelics.com/tribute/bellsys/belllabs_kits.html http://www.larkfarm.com/cardiac_answers.htm Bill -- Bill Bradford mrbill at mrbill.net Austin, TX