| Business | Phone |
| American Heart Assn 8735 Plantation Ln, Manassas 20110 | (703) 361-2707 |
| Hospice Angel Flight 9998 Wakeman Dr, Manassas 20110 | (703) 335-1348 |
| Hydroponic Merchants Assn 10210 Leatherleaf Ct, Manassas 20111 | (703) 392-5890 |
| International Union-Operating 7531 Presidential Ln, Manassas 20109 | (703) 392-7700 |
| National Bark & Soil Producers 10210 Leatherleaf Ct, Manassas 20111 | (703) 257-0111 |