The "Dodo-Postcards" watermark is NOT on the actual card – it is an online watermark only.
Threshing Machine. Science Museum. HMSO. W. S. Cowell. Crown
Wilcox and Gibbs Sewing Machine. Science Museum. Museum. Hindson Print Group. Newcastle upon Tyne. England. Postcard
Crompton Mule. Replica of an Early Machine. Science Museum. Card 33
The Gloster. Built To Test the Whittle W. 1. Turbojet Engine. Science Museum. The Campfield Press
Mediaeval Ploughing. Science Museum. Crown
Boulton and Watt Rotative Engine. The Science Museum. London. No. 49
Early Watt Pumping Engine. The Science Museum. London. No. 46. Crown. RP
Supermarine Spitfire. Model. The Spitfire Though Best Remembered for the Role it Played in the Battle of Britain. Science Museum. The Artisan Press. Crown