| Business | Phone |
| R & R Custom Signs 400 W Foothill Blvd # 130, Glendora 91741 | (626) 335-2887 |
| Glendora Sign Co 507 E Route 66, Glendora 91740 | (626) 914-3995 |
| Hawk Signs & Engraving 859 E Route 66 # H, Glendora 91740 | (626) 963-1077 |
| R & R Signs 400 W Foothill Blvd # 130, Glendora 91741 | (626) 914-9454 |