Doing Documentary WorkSitting in his study, William Carlos Williams once revealed to Robert Coles what he considered to be his greatest problem in writing a documentary about his patients in New Jersey. When I'm there, sitting with those folks, listening and talking, he said to Coles, I'm part of that life, and I'm near it in my head, too. Back here, sitting near this typewriter its different. I'm a writer. I'm a doctor living in Rutherford who is describing 'a world