The National Library of Wales holds Plaid Cymru’s substantial archive, which, along with a large number of the party’s publications are available for researchers to study. To mark the centenary of the founding of the party as Plaid Genedlaethol Cymru in 1925 a selection of Plaid Cymru’s manifestos, publications and items from the archive has been digitised in order to create a timeline showing the main highlights of the party’s history.
Link > Archive