| Business | Phone |
| American Writing Institute 1808 I St Nw # 700, Washington 20006 | (202) 544-4224 |
| Castle Garden Enterprises 2311 Connecticut Ave Nw, Washington 20008 | (202) 332-1853 |
| Doreen Conrad Assoc 5327 42nd St Nw, Washington 20015 | (202) 364-1134 |
| Joseph Foote Assoc 66 G St Sw # A, Washington 20024 | (202) 554-5785 |
| National Writing Institute 325 Pennsylvania Ave Se, Washington 20003 | (202) 543-3442 |
| Porro Associates 2120 L St Nw, Washington 20037 | (202) 265-5969 |
| White House Writers Group 1030 15th St Nw # 1100, Washington 20005 | (202) 783-4600 |
| Word Guy 5315 Connecticut Ave Nw # 305, Washington 20015 | (202) 362-7263 |