The Baird clan loaded into the Blue Goose (1967 Buick Special Wagon) and drove to Yellowstone in the summer of 1975. We also had stops in/at Mitchell, Laura Ingalls Wilder's space, Wall Drug, Mount Rushmore, The Tetons, Rocky Mountain, and others. That's a Leica rangefinder I'm shooting, an Elton John's Greatest Hits T that I'm wearing, and a "raised by wolves" 'do that I'm owning.
I became enthralled with Yellowstone. It captivated me more than any other "out west" destination did before or since. It remains my single favorite national park to this day.