Vintage Native American Kokopelli Clay Pottery | Delma Tangreen Handmade Vase Dated 1973. True arrowhead imbedded in pottery. ~ 4.5” x 4.5” Delma Tangreen was known for her pottery as the Kokopelli Potter and owned Kokopelli Tales and Trails. Her interests were many and varied. Her passion was the rock writings all over southern Utah and depicted them in her work.