Complex sentence: Along with Paul Caponigro, William Clift, Walter Chappell and Carl Chiarenza, Cosindas co-founded the Association of Heliographers, a New York photographers' cooperative that included some of the most influential American art photographers of the 1960s.
Split into simpler sentences: Along with Paul Caponigro, William Clift, Walter Chappell and Carl Chiarenza, Cosindas co-founded the group Association of Heliographers, New York. A New York photographers' cooperative that included some of the most influential American art photographers of the 1960s.