New York: New Directions, 1946-58. First Edition. These five volumes together constitute the entirety of Williams's magnum opus, a long poem completed over the course of more than a dozen years. The first printings of Books I-IV were limited to only 1000 copies; Book V was issued in an open edition of 3000 copies. A cornerstone work of American modernism. National Book Award (for Book II, 1948). CONNOLLY 100 (citing Books I-IV; Book V did not appear until after Connolly's list was published). First Printings. Five octavo volumes; original tan cloth boards; printed dustjackets (save Book V, which has a pictorial jacket). Uniformly Near Fine copies in original dustwrappers, all unclipped but with moderate toning to spines and extremities; Book I also with a small scuff to rear jacket panel, partially eliding one word of text; Book IV with faint tide-mark along upper extremity of jacket, still easily Very Good to Near Fine overall.