| Business | Phone |
| Art Conservation Assoc 109 Webster St # 6, Boston 2128 | (617) 567-7950 |
| Art Conservation Resource Ctr 262 Beacon St # 4, Boston 2116 | (617) 262-5288 |
| Art Conservation Svc 30 Ipswich St # 101, Boston 2215 | (617) 247-2757 |
| Peter Williams Museum Svc 30 Ipswich St # 110, Boston 2215 | (617) 536-4092 |
| Oliver Brothers Inc 35 Fairfield St, Boston 2116 | (617) 536-2323 |