| title | ISBN-13 (ISBN-10) | year of publica- tion |
|---|---|---|
| W. E. B. Du Bois: A bibliography of his published writings | 978-0-9602538-1-4 (0-9602538-1-5) | 1979 |
| Who's who on the postage stamps of the world, 1840-1984: A master index | 978-0-9602538-9-0 (0-9602538-9-0) | 1988 |