sentences:  Wülfing also created a series of illustrations for Hans Christian Andersen's story "The Little Mermaid".Early examples of collections of her illustrations include "Der Mond ist aufgegangen" ("The moon has come up") (1933); "Christian Morgenstern" (1934); "Die Truhe" ("The Chest") (1935); "Der Leuchter" ("The Shining") (1936); "Die Schwelle" ("The Threshold") (1937); and "Die kleine Seejungfrau" ("The Little Mermaid") (1953).The Larkin book, plates, and postcards are now collectors' items, as are the original publications.