The "Dodo-Postcards" watermark is NOT on the actual card – it is an online watermark only.
P. 1. Prudhoe Castle. Northumberland. View from south. Department of Environment. Crown. 1977. W. S. Cowell
Warkworth Castle. Northumberland. Air View from South West
Warkworth Castle Northumberland. P. 2. Air view from south west. Crown. J. Howitt and Son
Warkworth Castle. Northumberland. General View from S. E. Ministry of Works. Crown
Warkworth Castle. Northumberland. Castle from river Coquet. Department of the Environment
Lindisfarne Castle. Northumberland. From the South. National Trust. Library of AirFotos. Ref. No. 220
P. 1. Warkworth Castle. Northumberland. Castle from river Coquet. Ministry of Public Building and Works. Crown. J. Howitt
Goodrich Castle. Gatehouse from North East. H. M. Office of Works. No 2
