| Business | Phone |
| M-Tec Training & Research 1701 E Front St, Traverse City 49686 | (231) 995-2200 |
| Marketviews Inc 160 E State St, Traverse City 49684 | (231) 941-1722 |
| Professional Research Svc 7311 Secor Rd, Traverse City 49684 | (231) 929-1191 |
| Sigma Sloan Research 141 W State St, Traverse City 49684 | (231) 929-4544 |