This subseries contains records relating to interactions between the Massachusetts Conference and the First Congregational Church, including meeting minutes, yearbook applications, and annual reports

This series contains records related to the many ministers of First Congregational Church and includes correspondences, sermons, call agreements, and information on the final service of the church.

This subseries contains records relating to interactions between the Massachusetts Conference and the First Congregational Church, including meeting minutes, yearbook applications, and annual reports

This subseries contains records relating to interactions between the Massachusetts Conference and the First Congregational Church, including meeting minutes, yearbook applications, and annual reports

This subseries contains records related to events and the history of the First Congregational Church, including constitution and bylaws, a church times, and records related to church anniversaries.

This series contains various vital statistics from the First Congregational Church and includes baptisms, deaths, marriages, membership, letters of dismission, and letters of transfer.

This subseries contains newsletters produced by the First Congregational Church, including the Gardner journal, the Tower Times, and Tidings.

The series contains visual materials like photographs and scrapbooks.

This series contains records related to the operation of the church building and includes renovation material, inventories, alterations, maintenance, and more.