CTDA is a group member organization (GMO) of the United States Dressage Federation and its members are automatically USDF group members (GMs). CTDA 2021 Membership is December 1, 2020 – November 30, 2021. Membership Fee effective March 8, 2021 is $50.00. Family members may be added for additional $20.00/per person. (family is defined as spouse and/or dependent at same address).