The bohemian, free-spirited existence that blessed many of Manhattan's gifted artists and writers in the nineteen fifties and sixties has, with current skyrocketing rents and the high-income requirements of basic living, been nearly extinguished. And only for the likes of an astute observer such as Joseph Caldwell, perhaps be almost forgotten. In his charming, brutally candid memoir, the author describes his tenure working at WQXR, the venerated...