Miscellaneous papers described by Mihangel ap Iwan [d. 1944] as 'Gohebiaeth neu lythyrau yn rhoi Cipdrem ar fywyd beunyddiol Estancia Nant y Pysgod ym Mhatagonia' and comprising correspondence between Mihangel ap Iwan and his nephews, Mihangel Gruffydd ap Iwan and Llewelyn Huw ap Iwan, superintendent of Nant y Pysgod, and letters to Mihangel ap Iwan from E. F. Hunt ('mab ffarm o ym[y]l Rhuthin, Dyffryn Clwyd'), R. Powell Jones and Philip J. Rees; copies of articles by Mihangel ap Iwan in Y Drafod and in various Buenos Aires newspapers, with illustrations of Port Madryn, Rawson and other places in 'Y Wladfa Gymreig'; miscellanea.

A note of agreement, 6 January 1885, between 'Luis' [Lewis] Jones, Edward J. Williams, and Thomas Davies, members of the 'Luis Jones y Cia' promoting a railway from Port Madryn to the Chubut Colony. The agreement is signed by Luis Jones and E. J. Williams, and is written in the latter's hand.