 She served as a Trustee of the United States Thoroughbred Owners and Breeders Association, was an Advisory Trustee to the National Museum of Racing and Hall of Fame, and was a Director of the Grayson-Jockey Club Research Foundation.A founding member of the Marion duPont Scott Equine Medical Center in Leesburg, Virginia, Alice du Pont Mills' cousin, Marion duPont Scott, was a significant owner/breeder in both flat and steeplechase racing.Involved in a number of charitable works, Alice du Pont Mills was a member of the national board of directors of Planned Parenthood.