| Business | Phone |
| 57 Horton's Point Lighthouse Lighthouse Rd, Southold 11971 | (631) 765-2101 |
| Long Island Chapter 1080 Main Bayview Rd, Southold 11971 | (631) 765-5577 |
| Southold Historical Society 54325 Route 25, Southold 11971 | (631) 765-5500 |
| Southold Historical Society Maple Ln & Main Rdamp;, Southold 11971 | (631) 765-4375 |