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Honors
1945: Houghton Mifflin Poetry Prize Fellowship
1947: Guggenheim Fellowship
1949: Appointed Consultant in Poetry at the Library of Congress
1950: American Academy of Arts and Letters Award
1951: Lucy Martin Donnelly Fellowship, Bryn Mawr College
1953: Shelley Memorial Award
1954: Elected to lifetime membership, National Institute of Arts and Letters
1956: Pulitzer prize for Poetry
1960: Chapelbrook Foundation Award
1964: Academy of American Poets Fellowship
1968: Fellow of the American Academy of Arts and Sciences
1968: Ingram-Merrill Foundation Grant
1969: National Book Award
1969: The Order of the Rio Branco (awarded by the Brazilian government)
1974: Harriet Monroe Poetry Award
1976: Books Abroad/ Neustadt International Prize
1976: Elected to the American Academy of Arts and Letters
1977: National Book Critics Award
1978: Guggenheim Fellowship
Honors
1945: Houghton Mifflin Poetry Prize Fellowship
1947: Guggenheim Fellowship
1949: Appointed Consultant in Poetry at the Library of Congress
1950: American Academy of Arts and Letters Award
1951: Lucy Martin Donnelly Fellowship, Bryn Mawr College
1953: Shelley Memorial Award
1954: Elected to lifetime membership, National Institute of Arts and Letters
1956: Pulitzer Prize for Poetry
1960: Chapelbrook Foundation Award
1964: Academy of American Poets Fellowship
1968: Fellow of the American Academy of Arts and Sciences
1968: Ingram-Merrill Foundation Grant
1969: National Book Award
1969: The Order of the Rio Branco (awarded by the Brazilian government)
1974: Harriet Monroe Poetry Award
1976: Books Abroad/ Neustadt International Prize
1976: Elected to the American Academy of Arts and Letters
1977: National Book Critics Award
1978: Guggenheim Fellowship