| Business | Phone |
| Capitol Marketing 1109 Spring St, Silver Spring 20910 | (301) 563-6186 |
| Peace Action 1100 Wayne Ave # 1020, Silver Spring 20910 | (301) 565-4050 |
| Foss Nirsystems 12101 Tech Rd, Silver Spring 20904 | (301) 680-9600 |
| Marcus Sarna 8905 Fairview Rd, Silver Spring 20910 | (301) 565-4020 |
| Ids Marketing Corp 8405 Colesville Rd, Silver Spring 20910 | (301) 585-6456 |
| Ikey's Inc 11200 Lockwood Dr, Silver Spring 20901 | (301) 681-8302 |
| Jane Goodall Institute 8700 Georgia Ave # 500, Silver Spring 20910 | (301) 565-0086 |