| Business | Phone |
| Bresser's Cross-Index Co 11430 W Bluemound Rd 108, Milwaukee 53226 | (414) 771-0824 |
| Buck Marketing Inc 3663 S Lenox St, Milwaukee 53207 | (414) 332-1758 |
| Catalog Vision 9001 N 76th St # 300, Milwaukee 53223 | (414) 586-3110 |
| List Exchange 9058 N Bethanne Dr, Milwaukee 53223 | (414) 357-7398 |
| Ncri List Management 1205 E Hermitage Rd, Milwaukee 53217 | (414) 540-1500 |