Maria Augusta Trapp is the author of Maria (1973), Die Trapp-Familie. (The story of the Trapp family singers). (1989), The Trapp Family on Wheels (1966), Around the Year with the Trapp Family./Music Arr. by Franz Wasner; Illus. by Rosemary Trapp and Nikolaus E. Wolff (1955), THE SOUND OF MUSIC. ADAPTED BY ROSEMARY BORDER. (1980).