In addition to The Beale Treasure Workbook,
Constance Rutherford is the author several children's stories, published in Cricket Magazine and others, and of two books of nonfiction: The American Water Spaniel (TFH Publications), and The Art of Making Paper Flowers (Dover Publications).
And though few are aware, she has been working the Beale codes off and on since the 1980s. She says it's more enjoyable to be working them with a friend, and her sister has filled this role.