I was doing a search and came upon these two films of the Rock Island in 1950. I was not around the Rock Island much while they were still using steam. Do a search on you tube wheels of progress -a 1950 Rock Island railroad film pt1 and pt2 These were films put out by the R I and you will see things that are no more.
Very nice and thank you. Quite nostalgic. I used to see the trains run through the Conway Yard (PA) as a lad and listen through an open window to trains being built all night in the 1950's. I remember seeing a Decapod sitting in the round table one night in the late '50's.
Love those old films. Another great YouTube channel is PoathArchives, that's all one word.