New York: Macmillan, 1940. dj. Hardcover first edition - The story one summer in the life of two young sisters - Dina is ten years old and Betsy is just six - who live on the island of Walcheren, one of the islands in the Province of Zeeland. Hundreds of years ago the men of Walcheren helped drive the Spanish from the seas and secured the peace of The Netherlands. Illustrated with black and white and duotone drawings by Cateau de Leeuw. Includes a glossary of Dutch words. 138 pp. Illustrated endpapers.

Grand Rapids: Erdmans Publishing, 1998. dj. SIGNED hardcover first edition - A story of a young boy helping the Dutch resistance in occupied Holland during World War II. SIGNED by the author on the front endpaper and dated in 1999. ISBN: 0-8028-51519.