| Business | Phone |
| Afl-Cio 7 School St, Annapolis 21401 | (410) 269-1940 |
| Aft Maryland Fdrtn-Teachers 275 West St # 108, Annapolis 21401 | (410) 295-3349 |
| American Federation-Employees Halligan Hall Naval Acad, Annapolis 21402 | (410) 268-9092 |
| Communications Workers-America 2441 Holly Ave, Annapolis 21401 | (410) 841-0034 |
| International Masonry Ctr Prince George & East Stsamp;, Annapolis 21401 | (410) 263-5596 |
| International Masonry Inst 42 East St, Annapolis 21401 | (301) 261-1841 |
| Saaaac 2521 Riva Rd, Annapolis 21401 | (410) 266-3133 |
| Sleola 121 Cathedral St, Annapolis 21401 | (410) 269-0640 |
| Sleola 7 Old Solomons Island Rd # 204, Annapolis 21401 | (301) 261-2822 |
| State Law Enforcement 7 Old Solomons Island Rd # 204, Annapolis 21401 | (410) 897-0048 |