| Business | Phone |
| Baltimore Sun 10440 Little Patuxent Pkwy, Columbia 21044 | (410) 715-2800 |
| Business Monthly 10632 Little Patuxent Pkwy, Columbia 21044 | (410) 740-7300 |
| Kidstreet News Po Box 205, Columbia 21045 | (410) 730-9308 |
| Patuxent Publishing Co 10750 Little Patuxent Pkwy, Columbia 21044 | (410) 997-4800 |
| Washington Post Co 8925 Mcgaw Ct, Columbia 21045 | (410) 309-1712 |
| Washington Post Newspapers 10490 Little Patuxent Pky #650, Columbia 21044 | (410) 772-2300 |