Comprises: Item 1: c. 90 letters, mainly from Maurice de Bunsen's parents, 8 Jan 1870-28 Dec 1884. Item 2: c. 100 letters, 2 Jan 1885-26 Dec 1885. Item 3: c. 25 letters, 3 Jan 1886-21 Aug 1886. Item 4: c. 40 letters from Maurice de Bunsen's parents, n.d., c. 25 letters from Marie de Bunsen and c. 20 letters from Hilda Bunsen, including a few not addressed to Maurice de Bunsen, c.1880-c.1890.