The First Congregational Church of Walla Walla Records consists of membership records and directories, deeds and abstracts, correspondence, annual reports and meeting minutes, records of the Peace United Church of Christ, ledger books, the Whitman Memorial service program, financial information, newspaper clippings and a journal, "Records of the First Congregational Church of Walla Walla Washington Territory," from the oldest Congregational Church in the state of Washington.