1911-1979 1917-1977 1926-1995 1939-2013 20thcentury american americanpoetry biography collections criticismandinterpretationbishop criticismandinterpretationheaney criticismandinterpretationlowell criticismandinterpretationmerrill criticismandinterpretationwalcott derek elizabeth english english-speakingcountries englishpoetry essaysmerrill history historyandcriticism historyinliterature james literatureandhistory memorialsinliterature memoryinliterature merrill monumentsinliterature poets politicalpoetry politicsandliterature proseliterature robert seamus travelmerrill versesatire