The sous-fonds consists of incoming correspondence (1879-1900), copies of published articles, sermons and lectures (1864-1900), and other personal material. The sous-fonds also include a small collection of material from Haweis' connection with Giuseppe Garibaldi. Materials include correspondence from or relating to Garibaldi (1860-1897) and various other manuscripts, printed and published items, and other items used in the 1882 Garibaldi display in London.