Renowned for his ambitious wordplay and dexterity with a wide range of tones and styles, John Ashbery was one of the most significant American poets of the 20th century. When he died in 2017, he left behind a number of substantial unfinished works that attest to his diverse obsessions, from children's literature, cliffhanger cinema reels, and classical music variations by Beethoven's pupil Carl Czerny to the history of early photography and the Gospel of Matthew. Ashbery's assistant Emily Skillings adds insight into his writing process, while poet/novelist Ben Lerner contributes the foreword.