Complex sentence: After Coulette's death, Donald Justice and Robert Mezey edited his collected poetry, which included a wealth of unpublished poems, and published the volume in 1990 through the University of Arkansas Press.
Split into simpler sentences: After Coulette's death, the poets Donald Justice and Robert Mezey edited and published Coulette's collected poetry. The collection included a wealth of unpublished poems, and was published in 1990 by the University of Arkansas Press.