The paper I wrote as part of my history internship in Yellowstone National Park in the summer of 2007 has been published in shorter form, with some of my own photographs, in Yellowstone Science:
Barton, Michael D. “Between Heaven and Hell’: Religious Language in Early Descriptions of Yellowstone National Park.” Yellowstone Science 16:3 (2008): 16-23.

Well done Michael. A well researched article that includes your own photos – quite a coup!
Thanks, Adrian!