The Thomas F. Ring papers consists of five copybooks of correspondence and notes, and one scrapbook containing correspondence, financial records, manuscripts, typescripts, notes, programs, and reports. They concern the functions of the St. Vincent de Paul Society, the Catholic Union, the Wayfarers Lodge, the Nightly Adoration Society, and other charitable and religious organizations; Ring's family estate (for which he was a trustee) and professional life; and John Boyle O'Reilly memorabilia. Highlights include an essay by Ring on Christian care of the poor and its implementation in Boston; petitions for assistance to the poor; reports describing visits to prisons and asylums; and material collected in support of a paper Ring delivered on "Child Helping Agencies in the U.S." at the 23rd National Conference on Charities and Correction in 1896.