The Sunday paper (Salt Lake Tribune) had an article on Zion National Park. I knew my great grandfather had surveyed the park in the early 1900's, so I thought I'd look at the article out of curiosity and SURE ENOUGH... there it was. A mark on their timeline with Leo A. Snow's name on it. If you click on the picture, it blows it up so it is readable. The original link to the article is here.