Rather than ride into the park on snowmobiles from the town of West Yellowstone, we opted for a trip on a historic yellow snow coach -- kind of a small, boxy heated bus on tracks that were first used 50 years ago.

CNN: Taking the kids: A winter trek in Yellowstone

Before Sly Stone if you were a kid who liked popular music your choices were kind of like the waiting rooms of a Southern bus station in the 1950s, separate.

NPR: Sly Stone Rumored to Make Grammy Bow