For possible future reference
 

Sent a post called "where did my heat go" and received zero replies.
Now I know why.
Here's the deal.
Shut the heat off under the hood using the valve on the passenger's side on the firewall. Wanted to get the heat back yesterday, so I moved the valve the other way.
No heat.
Checked today and found the fan/alternator belt was way loose.
The bolt that holds the alternator bracket to the block was broken. Everything had gradually shifted.
The water pump wasn't turning, hence - no heat.
Everything is fine now, but I don't want to remove a broken bolt in the head again. PITA.
Hope this helps someone down the road.

thanks dad!

been there with the busted bolt in the head. Was actually starting to think about rotating the heads...might have been easier!

Hope it didn't run too long with that problem................don't want any other problems to come out of it..............