When Rivers and Mountains was published in 1966, American poetry was in a state of radical redefinition, with John Ashbery recognized as one of the leading voices in the New York School of poets. Ashbery himself had just returned to America from ten years abroad working as an art critic in France, and Rivers and Mountains, his third published collection of poems, is now considered by many critics to represent a pivotal transition point in his artistic career. The poet who would gain widespread a...