Ten letters, 1894-1925, from, to, or relating to the Rev. Dr William Hopkyn Rees, including three, 1912, from the Rev. Dr Timothy Richard, some of which are quoted in H. T. Jacob's biography of W. Hopkyn Rees; with related printed items, 1883-1925; and five letters, 1894-1915, from a Welsh immigrant family in Patagonia.

Photocopies from the memorandum book, 1865-1916, of Richard Ellis [originally from Llanfechain, Montgomeryshire], who sailed aboard the Mimosa to Patagonia in 1865, and a photocopy from a newspaper of an article in Spanish relating to the diary.