Disciples of Christ Historical Society is the official archives for congregations of the Stone-Campbell tradition, also known as the Restoration Movement (Wikipedia page ). The Society is incorporated as a general ministry of the Christian Church (Disciples of Christ) and serves the three branches (called "streams") of the Stone-Campbell tradition: the Churches of Christ, Independent Christian Churches/Churches of Christ and the Christian Church (Disciples of Christ).
Disciples of Christ Historical Society was founded in 1941 and has been located in Nashville, Tennessee since 1952. The Society is housed in the Thomas W. Phillips Memorial Archives, built in 1958 and placed on the National Register of Historic Places in 2006. The building is remarkable for its late Gothic Revival limestone façade and numerous stained glass windows.
More information on the Wikipedia page  which links to pages on the several branchs.
The website is