Great Northern?

Great Northern? is the twelfth and final completed book of Arthur Ransome's Swallows and Amazons series of children's books. It was published in 1947. In this book, the three families of major characters in the series, the Swallows (the Walker family), the Amazons (the Blackett sisters) and the Ds (the two Callums), are all reunited in a book for the first time since Pigeon Post. This book is set in the Outer Hebrides and the two familiar Ransome themes of sailing and ornithology come to the fore.