| Business | Phone |
| Preservation New Jersey 30 S Warren St, Trenton 8608 | (609) 392-6409 |
| Watson House 151 Westcott Ave, Trenton 8610 | (609) 888-2062 |
| Ewing Township Historic 27 Federal City Rd, Trenton 8638 | (609) 883-2455 |
| Hamilton Township Historical 2200 Kuser Rd, Trenton 8690 | (609) 585-1686 |