| Disgrifiad | (1) Sheet A. Chronological Conspectus, 1643-1840
(2) Sheet B. Chronological Conspectus, 1841-1870
(3) Enwau y Cylchgronnau Cymraeg yn ôl trefn yr Wyddor
(4) Additional alphabetical index of Welsh periodicals comprising those omitted from Sheet A and those established after the year 1870
(5) Further chronological list |