| Business | Phone |
| Alna Envelope Co 1567 E 25th St, Los Angeles 90011 | (323) 235-3161 |
| Mead Westvaco Envelope Prods 2828 E 12th St, Los Angeles 90023 | (323) 261-3101 |
| Vision Envelope & Printing Co 13707 S Figueroa St, Los Angeles 90061 | (310) 324-7062 |
| Esselte Pendaflex Corp 7171 Telegraph Rd, Los Angeles 90040 | (323) 685-6220 |