John Campbell 

John Campbell opened the Growers Marketing Service, originally based in Leesburg, Florida. He served in leadership with the National Watermelon Association, serving as President prior to 1947. He also served as Chairman of the Executive Committee and Chairman of the Executive Council. 

In 1945, three counties of watermelon growers (Lake, Marion, and Sumter Counties) organized and formed the Watermelon Growers Association. Mr. Campbell was the first president of the association. John was also one of ten committee members that established the original Florida Fruit and Vegetable Association in 1943.

Mr. Campbell was the second vice president of the Melon Distributors Association in 1937-38. He was known for his dedication to the Association, as well as his generosity.