Reports in English and Welsh by the Wales Youth Parliament Mental Health and Wellbeing Committee "Young Minds Matter" 2022, by the Education and the School Curriculum Committee "My School Day" 2023 and a Welsh language copy only of report by the Climate and Environment Committee "Ffyrdd Gwyrdd" 2023.

Cofnodion Cymdeithas Edward Llwyd, yn cynnwys: cyfansoddiad y Gymdeithas; cofnodion cyfarfodydd blynyddol; cofnodion y Pwyllgor Gwaith, yr Is-bwyllgor Monograffig, yr Is-bwyllgor Marchnata, yr Is-bwyllgor Enwau a Thermau, ac Is-bwyllgor yr Amgylchedd; gohebiaeth; ceisiadau am grantiau; papurau ariannol; a phapurau aelodaeth. = Records of Cymdeithas Edward Llwyd (the Edward Llwyd Society), including: the Society's constitution; minutes of annual meetings; records of the Working Committee, the Monographic Sub-Committee, the Marketing Sub-Committee, the Names and Terms Sub-Committee, and the Environment Sub-Committee; correspondence; applications for grants; financial papers; and membership papers.