| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| Directory of U.S. Labor Organizations 1996 | 978-1-57018-027-9 | 1996 | |
| Directory of U.S. Labor Organizations 1997 | 978-1-57018-081-1 | 1997 | C. D. Gifford |
| Directory of Us Labor Organizations 1998 | 978-1-57018-112-2 | 1998 | |
| Directory of U.S. Labor Organizations, 2004 | 978-1-57018-472-7 | 2004 | |
| Directory of U.S. Labor Organizations 2005 | 978-1-57018-506-9 | 2005 | |
| DIRECTORY OF US LABOR ORGANIZATIONS, 2006 | 978-1-57018-564-9 | 2006 | |
| Directory of US Labor Organizations, 2008 | 978-1-57018-771-1 | 2008 | |
| Directory of U.S. Labor Organizations, 2009 Edition | 978-1-57018-845-9 | 2009 | |
| Directory of U.S. Labor Organizations, 2010 Edition | 978-1-57018-917-3 | 2010 | |
C.D. · C. D. Gifford · C. G. · C. Gifford · Courtney D · Courtney G · Courtney Gifford · D G