The following books are pieces of Congregational history and remain important resources for learning about Congregationalism today.
The Art and Practice of the Congregational Way: A Church Guide by Rev. Dr. Elizabeth Mauro
The Congregational Christian Way of Inter-Church Fellowship by A. Vaughan Abercrombie
How to Gather a Congregational Christian Church by A. Vaughan Abercrombie
The Covenant of Grace in Puritan Thought by John von Rohr
The Creeds and Platforms of Congregationalism by Dr. Williston Walker
To view and read more books on Congregational history and polity, check out the Congregational History and Polity section of this Google Library.