Papers, 1878-1932, of Edward Jones Williams, relating mainly to the Welsh settlement in Patagonia and the Chubut Mercantile Company, comprising preparatory notes relating to the building of the Chubut Railway, c.1907, correspondence relating to both his work and to the Welsh colony, 1909-1932; and printed material, 1909-1932, including annual reports of the Chubut Mercantile Company, 1909-1928.

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.