| Business | Phone |
| Cement Masons Trust Fund 1333 S Mayflower Ave # 350, Monrovia 91016 | (626) 444-4600 |
| Graphic Communications 518 W Duarte Rd, Monrovia 91016 | (626) 357-6476 |
| Jockey's Guild Inc Po Box 150, Monrovia 91017 | (626) 305-5605 |
| U A Local 142 W Pomona Ave, Monrovia 91016 | (626) 357-9345 |