| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Bibliographia Oziana: A concise Bibliographical Checklist of the Oz Books by L. Frank Baum and His Successors | 978-1-93O764-O2-6 (1-93O764-O2-2) | 2002 | Douglas G. Greene |
E.H. · P.E. · P. H. · Peter E. · Peter H.