Charles Dutilh (1803-1882) was prominent in the work of commerce in Philadelphia and served as the president of the Pennsylvania Company for Insurance. This collection includes three autograph-signed letters from or to Charles Dutilh during the mid-nineteenth century. The letters concern Charles Dutilh's involvement in Philadelphia societies, such as the Philadelphia Saving Fund Society and the Board of Directors of the Pennsylvania Company for Insurances.

The New Castle County Mutual Insurance Company was incorporated on February 6, 1849, as a mutual fire insurance company in Wilmington, Delaware. It was later renamed the New Castle Mutual Insurance Company. This small collection consists of seven portrait photographs of presidents and vice presidents of the New Castle County Mutual Insurance Company dating from around 1849 to 1912.