This collection consists of photos, photograph negatives, a yearbook, church programs, and a scrapbook including church committee meeting minutes, and newspaper clippings concerning church history and activities.

The photographs from the years 1984-2000, document the church buildings, congregational activities, fundraising events, and members of the congregation. The scrapbook from the years 1933-2002, documents the evolution of church governance, the development of the church buildings, and the congregational activities and organizations from the founding of the church in 1887 to the early 2000s. A timeline and summary of church history of the Holy Trinity Catholic Congregation is located in the first half of the scrapbook.