Compañía Unida de Irrigación del Chubut.
Tystysgrif cyfranddaliadau yng nghwmni cydweithredol dyfrhau Y Gaiman, Chubut, Patagonia, Yr Ariannin, yn enw Aaron Jenkins, 5 Medi 1934, wedi ei harwyddo gan John ap Hughes, Robert Evans a Myrddin Griffith.
Llythyrau, 1993-2016, a dderbyniwyd gan Gruffydd ac Eifiona Roberts, a fu'n athrawon gwirfoddol yn Y Wladfa rhwng 1994 a 1995, oddi wrth Eurgain ac Owen Tudur Jones, Luned Roberts de Gonzales, Gweneira Davies de Quevado, Alwina Huws de Thomas, Gwalia Davies de Evans, Ieuan Williams, Irma Roberts de Williams, Eryl ac Ieuan Jones, Marlin Elis de Millado, Alwina Thomas, May Williams de Huws, Neved Williams, Elena Davies de Arnold, Dewi Mefyn ac Eileen Jones, Erie James, Clydwyn Jones, Arianna Jones de Roberts, Delma Williams, Margreta Evans de Mesa, Elmar Davies de Macdonald, Meillionen Jones de Davies, Sibyl Owen de Evans, Eryl Williams de Remires, Aira Roberts de Huws, Esther Evans de Huws, Iola Evans, Gwenni Evans de Williams a Rona Davies.
Roberts, Gruffydd
A collection comprising correspondence, legal papers, press cuttings and other material relating to the Wladfa Gymreig in Patagonia, including material relating to Cwmni Masnachol Camwy; journals of Llwyd ap Iwan and an account by him of the Chubut Valley.
Mihangel ap Iwan, d. 1944
Nodiadau, rhaglenni, taflenni, a chyfnodolion Cymraeg a Saesneg, 1965, a grynhowyd gan Dr Marshall Lloyd, yn ymwneud â'i ymweliad â Phatagonia ar achlysur dathlu canmlwyddiant Y Wladfa Gymreig. = Notes, pictures, programmes, leaflets, and Welsh and Spanish periodicals, 1965, accumulated by Dr Marshall Lloyd, relating to his visit to Patagonia during the centenary celebrations of the founding of Y Wladfa, the Welsh colony.
Lloyd, J. H. Marshall.