John Dillwyn Llewelyn, 1850s (ca), Penllergare, in the valley, Salted paper print, from glass negative, National Museum of Wales - Amgueddfa Cymru, LL/91902

Thereza Llewelyn and/or possibly Mary Dillwyn, n.d., The Snowman No. 2 [A lady (possibly Lucy Llewelyn) and a man, with a barrow, building a snowman.], Collodion glass negative, National Museum of Wales - Amgueddfa Cymru, LL/131672

John Dillwyn Llewelyn, 1850s (ca), Penllergare, in the valley, Salted paper print, from glass negative, National Museum of Wales - Amgueddfa Cymru, LL/91903

Thereza Llewelyn and/or possibly Mary Dillwyn, n.d., The Snowman No. 2 [A lady (possibly Lucy Llewelyn) and a man, with a barrow, building a snowman.], Collodion glass negative, digital positive, National Museum of Wales - Amgueddfa Cymru, LL/131673

John Dillwyn Llewelyn, 1850s (ca), Ferns and daffodils, Glass negative, collodion / digital positive, National Museum of Wales - Amgueddfa Cymru, LL/98563

John Dillwyn Llewelyn, 1850s (ca), Ferns and daffodils, Glass negative, collodion, National Museum of Wales - Amgueddfa Cymru, LL/98562

Robert Howlett, n.d., Valley of the Mole, Albumen print, National Museum of Wales - Amgueddfa Cymru, LL/91901