The "Dodo-Postcards" watermark is NOT on the actual card – it is an online watermark only.
Chatsworth. The State Drawing Room. English Life Publications
The State Drawing Room. Chatsworth House. Derbyshire Artistic Series. G. Marsden. No. 2278
Chatsworth The State Drawing Room. V. 2063. Photochrom Co. Graphic Studios
Chatsworth. The State Dining Room. English Life Publications Ltd
Chatsworth. The State Dining Room. English Life. Derby