"W. Thedwall Thomas and friends" (link)
"Old woman with hat and shawl" (link)
"Mary Parry" (link)
"Carreg Samson cromlech" (link)
"Dog with a pipe in his mouth" (link)
This past spring I posted four photos from their Flickr photostream; they seem to have added quite a few more since then. The full set of 260 photos is here, and this link goes to the library's home page.
I would be appreciative if anyone can offer insight into the role of those wonderful top hats. Were they a standard part of some ethnic dress, or donner as part of a festival or commemoration?
Addendum: A tip of the (top) hat to Alys, who found the answer to my query above: ""The Welsh hat worn by women as part of Welsh national costume is a tall stovepipe-style hat, similar to a top hat. It is still worn by women, and particularly schoolgirls, in Wales on St David's Day, but rarely on other occasions... It is a legacy of 18th century dress."