Gwahanlith o = Offprint from "Cylchgrawn Llyfrgell Genedlaethol Cymru" XXVIII, 1993-4.
Y wasg gyfnodol Gymraeg a'r mudiad dirwest, 1835-1850 by Huw Walters. Published by Llyfrgell Genedlaethol Cymru in 1994. Publication and catalogue information, links to buy online and reader comments.