Trager’s photographs are held in private, corporate and institutional collections. In New York, they are held in the collections of the Museum of Modern Art and the Metropolitan Museum of Art, among other museums and societies. Additionally, the Library of Congress has acquired a complete compilation of his photographs and will house his archives as part of its core collections. Trager has published twelve books, including his two upcoming works published by Steidl, New York in the 1970s, and Photographing Ina, an anthology of photographs of his wife.