River Valley Tang Soo Do Academy, LLC
    625 Merchant Street
    Ambridge, PA 15003

    Phone: 724 266-6330

    E mail: info@rvtsda.com

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World Tang Soo Do Association Headquarters
2436 Hanford Road 
Burlington, NC 27215 
Phone: (336)-223-0056 or (215)-468-2121
E-mail: WTSDA@aol.com