In 1939 Miss Taylor performed wheel throwing demonstrations at the New York World's Fair. At that time Charles Grantier, another former University student became temporary director. He became permanent director when Laura Taylor decided to join with Robert. J Hughes to form the Wahpeton Pottery Company. He continued to direct the WPA project until it closed in 1942. After the move to Mandan, Margaret Cable and Frieda Hammers at the University assisted in the formulation of glazes suitable for use with the local Mandan clay.