Consider other major poets of the Modernist and Imagist movements, such as T.S. Eliot, Ezra Pound, E.E. Cummings, Wallace Stevens, Gertrude Stein, H.D., Marianne Moore, Mina Loy, and Amy Lowell.
Consider reading the Autobiography of William Carlos Williams, as he discusses his life both in the context of a physician and a writer.
Consider reading "Tradition and the Individual Talent" by T.S. Eliot, a prominent Modernist essay where the author presents his philosophy of tradition and the role of the poet and poetry in society.