| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Encyclopedia of Associations Regional, State, and Local Organizations: South Central and Great Plains States | 978-0-7876-1391-4 (0-7876-1391-6) | 1998 |
| Encyclopedia of Associations: Regional, State, and Local Organizations: Western States | 978-0-7876-2238-1 (0-7876-2238-9) | 1999 |