His work in the late 1960s and 1970s was classic anti-establishment, echoing the nonconformity promoted by larger counterculture movements which led to new freedoms, including the breakdown of codes on censorship. His 1970s films were independently made on shoestring budgets and were relatively obscure in the Absurdist movement.
One of his first underground films, Ball's Bluff, a fantasy short about a Civil War soldier who awakens in Central Park in 1961, put him on the map. He moved into big-budget filmmaking with the surrealistic Greaser's Palace. His most recent film was Rittenhouse Square, a documentary capturing life in a Philadelphia park.