Swallows and Amazons series image of the English Lake District and added Arthur Ransome's name to the select list of classic British children's authors". The series remains popular today. It contributes to the tourist industry in the Lake District and Norfolk Broads areas of England, where many of the books are set. There are also several societies dedicated to the study and promotion of Ransome's work which are largely inspired by the series. The first one to be founded was the Arthur Ransome Club in Japan. There is also the British-based group, The Arthur Ransome Society, which has an international membership. The series begins
Swallows and Amazons series adventures in the series, the children change roles and become explorers or miners. In the novel "Winter Holiday", the children meet Dick and Dorothea Callum, siblings visiting the area. Dick and Dorothea are often referred to as "The Ds" and appear in subsequent novels. Dick considers himself a scientist, while Dorothea sees herself as a writer. Two of the books feature the Callums without the Swallows or Amazons: "Coot Club" and "The Big Six". They are set in an accurate representation of the Norfolk Broads, particularly the small village of Horning and its surrounding rivers and broads. Two other books