Harry Daffern has worked many benefits and charities such as :
- Dallas Cattle Barons for American Cancer Society
- Houston Cattle Barons for American Cancer Society
- Waco Cattle Barons for American Cancer Society
- DIFFA of Dallas
- The Sheldon School of Dallas
- Collin County Silver Dollar Ball
- African American Museum
- SPCA Fur Ball
- March of Dimes Fort Worth
- Christian Works for Children
- March Of Dimes Dallas
- Dallas Junior League
- Limbs for Life Foundation
- Dallas Heritage Village
- American Heart Assoc.
- Texas Animal Rescue (Ducks Unlimited National Convention Auction)
