If you find Mary Oliver’s collection interesting, then you should also check out Next To Nothing: Collected Poems: 1926-1977 by Paul Bowles. Bowles is one of my top three writers (along with Camus and Steinbeck). My favorite poem from his collected poems is Nights. It was written in 1977 and is transcribed below:

There have been times, what with this and that, when the whisper of words was not enough. On some shelf of memory lies a misplaced summer, one not stored away for later savoring. Surely it ended early, with unexpected fogs, with the wind sliding past through unmeasured darkness. No voice could be enough, what with this and that, and the hours falling faster. From Next To Nothing: Collected Poems: 1926-1977, Black Sparrow Press, 1990.