-546-3747 The Rolf Institute of Structural Integration (golfing): P.O. Box 1868, Boulder, CO 80302, 800-530-8875 or 303-449-5903, www . rolf . org Guild for Structural Integration (Rolfing): P.O. Box 1559, Boulder, CO 80306, 800-447-0150, WWW. rol fgui 1 d . org Aston-Patterning: P.O. Box 3568, Incline Village, NV 89450, 702-83