| Absolute Asia | 800-736-8187 |
| Asia Transpacific Journeys | 800-642-2742 |
| Central Holidays | 800-611-1139 |
| CIT Tours | 800-248-8687 |
| Collette Tours | 888-261-8483 |
| Country Walkers | 800-464-9255 |
| Europe Express | 800-927-3876 |
| Fun Safaris | 800-323-8020 |
| Globus and Cosmos Travel Company | 800-323-3796 |
| Go Ahead Vacations | 800-242-4686 |
| Grand European Tours | 800-552-5545 |
| Insight Vacations | 888-562-0111 |
| LADATCO Tours | 800-327-6162 |
| National Trust Study Tours | 800-944-6847 |
| Pacific Delight Tours | 800-221-7179 |
| Saga Holidays | 800-291-0786 |
| Sunbeam Tours | 800-955-1818 |
| Tourlite International | 800-272-7600 |
| Trafalgar Tours | 800-854-0103 |
| Victor Emanuel Nature Tours | 800-328-8368 |