Christopher Williams centenary, 1873-1973 : [catalogue of exhibitions at] National Museum of Wales, Cardiff, 31 March-22 April, Glynn Vivian Art Gallery, Swansea, 5 May-2 June, Town Hall, Maesteg, 18 by A. D. Fraser Jenkins. ISBN 072000036X. Published by Natural Museum of Wales in 1973. Publication and catalogue information, links to buy online and reader comments.