Pictures from The History of Wales by B. B. Woodward, B.A., London, (Quarto, 1853 [First edition] vi + (ii) + 608pp, illustrated with 76 steel-engraved plates)
If you use these pictures for anything, or would like me to scan more, let me know. You can refer to the list of illustrations. All of these images are out of copyright (in the public domain). Henry Gastineau (the principal artist) died in 1876.
There is a low-quality scan of this entire book at Google Books but they forgot to scan the plates, I think.