The "Dodo-Postcards" watermark is NOT on the actual card – it is an online watermark only.
North Yorkshire. Helmsley Castle. Air View From the West. W. S. Cowell. Crown
Yorkshire. Helmsley Castle. Air View From the South. Ministry of Public Building and Works. J. Howitt. Crown
Yorkshire. Helmsley Castle. Air View From the South. Ministry of Public Building and Works. George Pulman. Crown
Scarborough Castle. North Yorkshire. Air View. Hindson Print. Newcastle
Scarborough Castle. North Yorkshire. Air View. H. M. S. O. E. Baylis. Crown
Helmsley Castle. North Yorkshire. Department of the Environment
North Yorkshire. Helmsley Castle. English Heritage. Alan Sorrell