The name of Burton Agnes Hall rang a bell for me Trish.
I believe I visited there many, many years ago - when I was a child in fact. So long ago that I don't really remember any specifics about it.
When I lived in the northeast at that time, I visited a lot of such historic buildings with my parents; e.g. Bowes Museum, Chatsworth House, York Museum, Fountains Abbey, the list goes on and on. We always bought a souvenir brochure and postcards to look back on. Sadly though I don't have any of those souvenirs any more.
Anyway, thank you for posting those links. The Facebook page didn't show anything though. I was logged in ok but didn't get to see your album.
The Burton Agnes Hall website didn't jog any memories for me, but as I said - it was a long time ago