Carl David is the third generation of a four-generation family art business in philadelphia. He is the author of collecting & care of fine art published by crown in 1981. His article about martha walter, an American impr...Carl David is the third generation of a four-generation family art business in philadelphia. He is the author of collecting & care of fine art published by crown in 1981. His article about martha walter, an American impressionist painter (1875-1976), was published in the American art review in May 1978 mr. David's new book, Bader Field, embodies the emotional story of a son's loving relationship with his father a legendary art dealer whose life is suddenly taken by a massive coronary at the young age of fifty-eight years.