I've added copies of the prints of Montgomery Castle and Powis Castle, Powys, Wales, but these are very poor images. If anyone has a better image, please let me know.

I've added poor copies of Ruthin Castle, Chirk Castle, Caergwrle Castle, and two of Denbigh Castle (NW and N). Again, if anyone can come up with better copies, please let me know.

I hope to be able to add copies of Coity Castle, Neath Castle, Pennard Castle, Penrice Castle, St. Donat's Castle and Weobley Castle (all of Glamorgan, Wales) shortly.

Have added Knaresborough Castle to the collection of electronic images.

Also found the one of Penrith Castle.

I have just added copies of Coity Castle, Neath Castle, Pennard Castle, Penrice Castle, St. Donat's Castle and Weobley Castle (all of Glamorgan, Wales).

Managed to solve the identification of "Green Castle" listed as one of the castles engraved by the Buck Brothers. This is also known as Castell Moel, in Wales.

Found a copy of the west view of the Tower of London - but a blurred image.

Is that a blurred print or a web image?

It's a web image.