This is the source of the ones that I purchased several years ago. I was asked to find one or two for the photo trains at SVRy so got a couple extra to put in stock in our store. The ones that I remember as a kid and what is often seen in old rr photos are a bit smaller. They told me they no longer make the smaller size. Apparently the company made water bags by the car load for the military for years. At some point if I got the story straight the military decided to opt for something more space age to hold drinking water. The company discontinued the bags altogether for a while, but begin making this large version due to popular demand.