C. G. · C. Gifford · Court D. Gifford
| title | ISBN-13 | year of publication |
|---|---|---|
| Directory of U.S. Labor Organizations: 1999 | 978-1-57018-180-1 | 1999 |
| Directory of U.S. Labor Organizations, 2001 | 978-1-57018-280-8 | 2001 |
| Directory of U.S. Labor Organizations 2005 | 978-1-57018-506-9 | 2005 |
| Directory of U.S. Labor Organizations, 2007 Edition | 978-1-57018-668-4 | 2007 |