Thing about the railway, some things in certain locations disappeared quite quickly like the coaling stage at Bescot yet some things survive, like the old steam sheds OK fenced off from the rest of the depot, but again look at Stourbridge Jnc again loads of steam era equipment still there in the 70's. Its a very hit and miss subject. Another place to look is New St the old signal light building on Platform 1 it survived the complete annihilation of the old New St and was found a new use ( Training and Road learning School), only being demolished in the last few years.
Mods this is a good topic worthy of its own thread can you split it away please