| Business | Phone |
| Manhattan Institute 1615 M St Nw, Washington 20036 | (202) 463-6628 |
| Gpc 1830 1st St Nw, Washington 20001 | (202) 588-9624 |
| National Telecommunications 122 C St Nw # 640, Washington 20001 | (202) 638-4500 |
| Smith Co 4455 Connecticut Ave Nw # B600, Washington 20008 | (202) 895-0900 |