A Yankee Flier with the R.A.F. is a World War II adventure novel written by Rutherford G. Montgomery. It follows the story of a young American pilot who joins the Royal Air Force (RAF) during World War II and becomes involved in various missions and adventures. The novel likely explores themes of courage, friendship, and the camaraderie among soldiers during wartime. Montgomery was known for his prolific writing career, particularly in the field of children's literature, and this book is likely an exciting blend of historical fiction and aviation adventure aimed at young readers.