Yep, my grandparents on my moms side only had one outhouse until the mid '80's. Then, they added on an actual full bath. Before that, when I was a child, I even remember taking baths in a large galvenized tub with water that was heated on the stove and cold water from the kitchen sink.
Grandparents on pops side (although they still had an outhouse, as well) had a bath tub and a commode in two separate, very small rooms, off a screened-in back porch, as far back as I can remember. No running hot water for the tub. Water was heated up in a big pot on the stove, and then mixed with the cold from the tub faucet.
Good times...!