The Mountain Clown & Other Foul Animals opened at the Yellowstone Art Museum in Billings, Montana in 2024 and was featured by the New York Times in its seasonal U.S. Gallery and Museum preview. The exhibition presented a fabricated career retrospective of Mable MacKenzie, a fictional children’s storybook author, complete with literary and biographical excerpts, paintings, toys, comics, and a live gallery performance of Haseltine’s one-person show The Phantom Chuckwagon.