Well, I didn't think this was going to happen; was out yesterday trying to sell some surplus yard tools and wound up at the local thrift shop.  Saw an electric typewriter on the back shelf, and since it was the first one I've seen since starting to look, went over to check it out.  It's a Smith Corona Electra 220, and the carriage made a grinding noise when I tried to move it back and forth--but since it was only $7.00, I bought it.  Got it home and found out one of the keys (the "n") was completely disconnected and the linkage to the typebar was bent.  Got that fixed and the carriage was okay, too.  the back cover was out of position and pushing against the back carriage rail.  Once that was fixed and I put in a good ribbon, it was working perfectly.  This must be what it means to be "bitten."
Anyway, I don't know anything about this typewriter; the serial # is 6ELO 133921 and doesn't match anything in the Typewriter Database.  There aren't many listed in the Database, and I have no manual.  I'm assuming that it is from the late '60's, but I don't know for sure.  It's filthy and really needs disassembling so it can be properly cleaned, but I'm not going to take it apart without having something to go by.  It's a great typer, if you like electrics--I still prefer the manuals' touch.  Any suggestions or info?
Thanks.