- D.U.C.K.hunt - The most comprehensive web site about Don Rosa.
- The D.U.C.K.man - Sections include: Introductions to Don Rosa and his work, biographies of known and less known characters, a guide to the history of Duckburg, a presentation of the clan McDuck, comparison of Duck family trees, and information on story codes.
- The Two Worlds of Don Rosa - Compares the different versions of Don Rosa stories.
