"A directory of Congregational and Plan of Union Churches in the states of Illinois, Indiana, Michigan, Ohio, and Wisconsin. Includes post-merger Congregational Christian and United Church of Christ congregations, and Unitarian Churches begun by 1850 in these states, and early churches in the Presbyterian Church, U.S.A. in Michigan, Wisconsin, the Western Reserve of Ohio, and in certain additional presbyteries. A demographic and organizational history of Congregationalism in the area, reviewing its interaction with Presbyterianism and the workings of the Plan of Union, is also included"--Title page verso

"The definition of fellowship does become confusing between Presbyterian and Congregational churches because of the Plan of Union which existed 1801 to 1852, and continued in some local congregations affiliated to the Presbyterian judicatories until 1870 or later"--P. ii