His photographs have been exhibited throughout the U.S. and are in major private and public collections such as the Museum of Fine Arts, Houston, the George Eastman House, and American Express. He was an adjunct professor at the University of Pennsylvania and has been published in The New York Times, Geo Saison, Esquire, Mother Jones, and Newsweek, amongst other international publications. Gallery is a self-proclaimed nomad who loves photographing spiritual sites throughout the world.