| title | ISBN-13 | year of publication |
|---|---|---|
| The Physical Lincoln | 978-0-9818193-2-7 | 2008 |
| The Physical Lincoln Complete | 978-0-9818193-4-1 | 2008 |
| The Physical Lincoln Sourcebook | 978-0-9818193-3-4 | 2008 |
| Zebra Cards: An Aid to Obscure Diagnosis | 978-0-943126-13-5 | 1989 |
G.S. · J. G. · J. S. · John G. · John S.