You could begin by looking at the John Barriger photographs at the link below. There are a number of them west of Poughkeepsie and most, if not all, are identified as to location. Some were taken in the late 50's or early 60's and some in the 1930's. Rich Stoving has a book out on the Hudson Division, Power Along the Hudson, and if I recall there is a photograph of a train taking water at the Tivoli pans in that.
https://www.flickr.com/photos/barrigerl ... 332517193/
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