Cerddi'r Plant by Waldo Williams and E. Llwyd Williams was first published in 1936 by Gwasg Aberystwyth. This new edition celebrates the original publication by highlighting 29 of the best poems, with 16 by Waldo Williams, including 'Byd yr Aderyn Bach' which was not in the original book, and 13 poems by E. Llwyd Williams.