| Business | Phone |
| Walman Optical Co 801 12th Ave N # 2, Minneapolis 55411 | (612) 520-6000 |
| P C Optical Products Inc 801 12th Ave N, Minneapolis 55411 | (952) 835-7373 |
| Twin City Optical Safety 5205 Highway 169 N, Minneapolis 55442 | (763) 551-2000 |
| Personal Eyes Optical Lab Co 2455 Xenium Ln N, Minneapolis 55441 | (763) 559-8848 |