The Letters of Denise Levertov and William Carlos Williams is the most engaging and lively of literary correspondences - at once a portrait of two geniuses, the testimony of their remarkable friendship, and a seedbed of ideas about American poetry. With a 1951 fan letter, the young British poet introduced herself to Williams, and by 1959, Williams is congratulating Levertov on her growth. The letters also chronicle their search (individually and together) for a set of formal poetic principles, a search which culminated for Levertov in 1965, when she coined the term "organic form". The warmth, the directness, the flavorsome individuality of the letters - 34 from