Fire Down Below and Here I go on the Road Again...
Actually it doesn't get much better than that.
Tons of lyrics here:
http://www.80smusicmall.com/band/Doobie_Brothers.htm
You can still get most of their stuff on ebay or just do a search. Hey, I was a teenager when they performed most of their hits. I have allot of their stuff on CD and a few albums but God only knows what shape their in. They're in a box in the basement - probably warped.