| Business | Phone |
| Smith Investigations Po Box 180215, Fort Smith 72918 | (479) 632-7000 |
| Al Mc Leroy Investigations Po Box 844, Fort Smith 72902 | (479) 484-0444 |
| Dutton Investigations 5100 S Zero St, Fort Smith 72903 | (479) 883-1830 |
| Dyar Investigative Svc Ltd Po Box 2964, Fort Smith 72913 | (479) 646-0305 |
| Mission Possible Investigations PO Box 11623, Fort Smith 72917 | (501) 349-0042 |