"Sunday Morning" is a poem from Wallace Stevens' first book of poetry, Harmonium. Published in part in the November 1915 issue of Poetry, then in full in 1923 in Harmonium, it is now in the public domain. The first published version can be read at the Poetry web site: The literary critic Yvor Winters considered "Sunday Morning" "the greatest American poem of the twentieth century and... certainly one of the greatest contemplative poems in English".
Not who you're looking for? Others named Sunday Morning: Canadian radio program formerly aired on CBC Radio One · public artwork by India Cruse-Griffin, in Indianapolis, Indi · original song written and composed by Lou Reed and John Cale · song by the global pop group Now United