Hamm Glass Studios

• Seattle Weavers' Guild
• San Juan County Textile Guild
• Contemporary Handweavers of Houston
• Dallas Handweavers and Spinners Guild
• Northwest Pennsylvania Spinners and Weavers Guild
• Philadelphia Guild of Handweavers
• South Hills Textile Arts Guild
• Weaver's Guild of Miami Valley
• Weavers Guild of Greater Cincinnati
• Central Ohio Weavers Guild
• Western North Carolina Fibers/Handweavers Guild, Inc.
• Jockey Hollow Weavers