You have to love the inclusion of Wyoming located Old Faithful in a Montana photo gallery. 90% of the park is in WY, but Idaho and Montana use it to lure tourists.....who end up spending their money in WY rather than MT or ID.....THANKS! The Montana tourism board is not too bright. I'd be pushing Glacier way more than they currently do.
Keep in mind that three of the five access points for Yellowstone are in Montana.
The Beartooth Highway from Red Lodge, the route through Paradise Valley from the north and West Yellowstone. Yellowstone visitors who approach the park via these routes spend a lot of time and dollars in Montana.
With all due respect access points are irrelevant, a photo is either taken in Montana or it is not, period. Besides, there are six [road] access points and only two of them are really from Montana since you can't get to Silvergate/Cooke City without first going through Wyoming.
Keep Wyoming Clean. Dump your trash in Montana. Heeh heeh.