Now recognized as one of the giants of postwar American fiction, William Gaddis (1922–98) shunned the spotlight during his life, which makes this collection of his letters a revelation. Beginning in 1930 when Gaddis was at boarding-school and ending in September 1998, a few months before his death, these letters function as a kind of autobiography, and are all the more valuable because Gaddis was not an autobiographical writer. Here we see him forging his first novel The Recognitions (1955)...