1976 Toyota Chinook
Toyota offered three different models in the 1970s. There was the Dolphin, built by National RV, the big Sunrader, made in cooperation with Gardner-Pacific, and the Chinook. The latter was based on the second-gen Hilux truck and built in cooperation with a California company.
These truck-based campers were of the compact variety, but many of them were fitted with pop-tops that created a six-foot-high (1.82-meter) lounge. They're famous for their reliability and solid mileage, and they're easy and affordable to maintain. But many of them didn't survive through decades of abuse, and those that did require a lot of work.
If you're in the market for a Chinook, it's your lucky day. This example from 1976 is in excellent condition.