100 Days 48 States

WYOMING

Bighorn Canyon NRA Lovell WY
Bighorn Canyon has two visitor centers - one at Yellowtail Dam in Fort Smith, Montana, and another in Lovell, Wyoming. The Lovell VC is right along US-14 ALT.
Devils Tower NM Devils Tower, WY
From I-90, take US-14 north to route 24. You can't miss it. The stamp is inside the visitor center, around the base of the tower, just off the parking lot.
Fort Laramie NHS Fort Laramie, WY
There are a total of five stamps here - one for Fort Laramie and four different trail stamps. The fort is about 3 miles west of the town of Fort Laramie, on route 160.
Grand Teton NP Colter Bay, WY
Grand Teton has three visitor centers, and three different stamps. This one is at the Colter Bay Visitor Center, right on Jackson Lake. Take US-89/191/287and head to Colter Bay Village.
John D. Rockefeller, Jr., Memorial Parkway Colter Bay, WY
The Parkway connects Yellowstone and Grand Teton National Parks. There is a visitor information station along the road, but it was closed when I was there. I got this stamp at the Colter Bay Visitor Center in Grand Teton NP.
Yellowstone NP Mammoth Hot Springs, WY
Eastern National lists nine different stamps for Yellowstone NP. You'll find this one in the Albright Visitor Center, in Mammoth Hot Springs, near the northwest entrance to the park.
Yellowstone NP Old Faithful, WY
This stamp is located at Old Faithful, inside the visitor center.