| Business | Phone |
| Lettering & Graphics By Kathy 1150 Lincoln Ave # 1, Holbrook 11741 | (631) 563-3701 |
| Data Display Usa Inc 5004 Veterans Memorial Hwy, Holbrook 11741 | (631) 218-2130 |
| International Display Systems 5008 Veterans Memorial Hwy, Holbrook 11741 | (631) 218-1802 |
| S 2 Signs 1320 Lincoln Ave # 11, Holbrook 11741 | (631) 981-7446 |