In 1950 Eric Sawford set out to make a photographic record of as many types of steam locomotives as he could that existed on British Railways. This title features among others engines such as: veteran 2-4-OWTs, the 4-4-2 Adams Radial tanks, and heavy tank engines comprising the massive G16 4-8-OTs and H16 4-6-2Ts together with the Z class 0-8-OTs.