The "Dodo-Postcards" watermark is NOT on the actual card – it is an online watermark only.
Northants. Rockingham Castle. The Great Hall. Larkfield Printing. Jeremy Whitaker
Rockingham Castle. Northants. The Great Hall. Jeremy Whitaker. Larkfield Printing Co. Brighouse. West Yorkshire
Northants. Rockingham Castle. The Long Gallery. Larkfield Postcards. Jeremy Whitaker
Northants. Rockingham Castle. The Long Gallery. Larkfield Printing. Jeremy Whitaker
Northants. Rockingham Castle. The Long Gallery. Larkfield Printing Company Limited. Jeremy Whitaker
Rockingham Castle. Great Hall. Country Life. RP
Great Hall. Rockingham Castle. RP
Great Hall. Rockingham Castle. Aero Pictorial