For this collection Plath was awarded a Pulitzer Prize in Poetry in 1982, making her the fourth to receive this honour posthumously. The Collected Poems were published in 1981, which included previously unpublished works. She is credited with advancing the genre of confessional poetry and is best known for two of her published collections, The Colossus and Other Poems (1960) and Ariel (1965), as well as The Bell Jar, a semi-autobiographical novel published shortly before her death in 1963. Sylvia Plath ( / p l æ θ/ October 27, 1932 – February 11, 1963) was an American poet, novelist, and short-story writer.