The Connecticut League of History Organizations maintains an office at 940 Whitney Avenue in Hamden, sharing the headquarters of the Connecticut Trust for Historic Preservation.

Incorporated as a nonprofit organization in 1950, the Connecticut League of History Organizations encourages and supports the activities of state historical organizations, enhances knowledge of state history, promotes professional standards, serves as a network for the exchange of information, and advances historical interests at the state level.

Full history of the League is coming soon.