Joseph B. Callaghan, Inc. is proud to have restored many great historical landmarks, both large and small. Our staff has assessed and restored building structures dating back to 1850. From Franklin Field Stadium (1922) to Princeton’s Nassau Hall (1885), and Carnegie Lake Dam (1906), we pride ourselves on restoring this country’s building fabric. We have also designed a working replica of an 1880 pedestrian swing bridge over the Delaware & Raritan Canal. We have extensive experience presenting to City Historical Commissions.