Edward Diers (1871 - 1947) 1904 Rookwood Vellum Vase. Ed Diers was an artist at Rookwood from 1896 to 1931. He was educated at the Ohio Mechanics Institute, Industrial Art School and the Cincinnati Art Academy, according to notes posted on AskArt.com. He is well known for his particular skill in executing landscapes on the Rookwood pieces he decorated. No cracks, chips, or restorations. 1904 Was the first Year this glaze was introduced, so this was likely an experimental piece. There are some flaws, crazing and peppering to the white part of the poppy 5.25" tall.