The United Church of Christ (Congregational) photograph collection contains images of church members, activities, and buildings in Idaho, Utah, and Wyoming. The photos show many of the buildings used in the past and in the present by the churches as well images of church members and the activities in which they were involved. A large portion is of the various camps used for church outings and summer camps. There is also a folder of various Congregational church buildings in North America.

The United Church of Christ Congregational records (1891-1983) contain correspondence, administrative and financial records, reports, meeting minutes, pamphlets, educational materials, conference records, newsletters, membership rosters, legal documents, news clippings, and church programs. The United Church of Christ is a Protestant denomination formed by the union of the Evangelical and Reformed Church and the Congregational Christian Churches.