| Business | Phone |
| Cahner's Business Information 1350 E Touhy Ave, Des Plaines 60018 | (847) 635-8800 |
| Seed World 380 E Northwest Hwy 200, Des Plaines 60016 | (847) 298-6622 |
| Penton Media Inc 2700 S River Rd 109, Des Plaines 60018 | (847) 299-3101 |
| Srds 1700 E Higgins Rd 500, Des Plaines 60018 | (847) 375-5000 |
| Typographia Press Inc 1259 Rand Rd, Des Plaines 60016 | (847) 635-8311 |