Frank Carroll About Frank I am a retired business entrepreneur, who has taken his hobby to the level of a semi-professional, photographing historical subjects, railroads (primarily steam), and working with the National Park Service., Frank Carroll Boulder Dam Theater @ night Frank Carroll 1000 Girl Scouts on Hoover Dam Frank Carroll O'Callaghan-Tillman Memorial Bridge Frank Carroll Sunset & surfer @ Morro Rock, CA Frank Carroll Union Pacific 844 at KelsoDepot Frank Carroll UUnion Pacific 4014 Big Boy @ Kelso,CA