Don't forget about Yellowstone's neighbor to the south, the stunning Grand Teton National Park.
This map shows Grant Teton National Park entrances, the route through John D. Rockefeller, Jr. Memorial Parkway to Yellowstone, and visitor centers. It also shows the major recreational waters of Jackson Lake, Jenny Lake and the Snake River.
At the bottom of the map, you'll see the orientation of the adjoining National Elk Refuge, which is worth a stop during the winter since that is where thousands of elk spend their winters every year. You'll also see where the park is in relation to the town of Jackson, Wyo.