There are no digital prints, they are all traditional photographs from negatives (or copy negatives) developed in chemicals over the past 100 years.
Steam Train Photo With Negative, 76079, BR Standard Class 4 28/07/74
Steam Train Photo With Negative, 92154 BR Standard Class 9F
Steam Train Photo With Negative, 78006 BR Standard Class 2
Steam Train Photo With Negative, 4744 LNER N2 Class
Steam Train Photo With Negative, 9619 GWR 5700 Class
Steam Train Photo With Negative, 3784 GWR 5700 Class