| Business | Phone |
| Cambridge Communication Design 59 Magazine St, Cambridge 2139 | (617) 354-0808 |
| Greely Communications 1 Broadway, Cambridge 2142 | (617) 621-7055 |
| Citigate Cunningham 1 Memorial Dr # 17, Cambridge 2142 | (617) 494-8202 |
| North Voice Communications 300 Bent St, Cambridge 2141 | (617) 588-4500 |
| Harvard University News Office 1350 Massachusetts Ave, Cambridge 2138 | (617) 495-1585 |
| Interlink Communications Ltd 1 Broadway, Cambridge 2142 | (617) 621-4002 |
| K T Communications 432 Columbia St, Cambridge 2141 | (617) 252-9955 |