| Business | Phone |
| Grant Research Inc 2156 Elkhurst Dr, Plano 75023 | (972) 618-3819 |
| Harper Research 2222 W Spring Creek Pkwy, Plano 75023 | (972) 596-5774 |
| Intelligence Quest Research 5700 W Plano Pkwy, Plano 75093 | (972) 250-2043 |
| Market Vision Research Inc 5500 Democracy Dr 110, Plano 75024 | (972) 403-3300 |
| Texas Research Assn 2716 Avenue K, Plano 75074 | (972) 423-4972 |