Thanks for the photo sent privately, Bruce. In viewing it, it is difficult to tell whether one is looking at the opposite end from the four in the CPR train or if it is actually a different type of boiler, though the size looks to be about the same. Those I have photos of all have solid ends with what appear to be flues through them in a pattern similar to what you have but without the three large, circular openings in them. The only other differences I note are minor in the way they are loaded. These all have a third tie-down over the center of the boiler to the middle of the flat car deck, the crossed ties are attached more toward the center of the boiler and there are the previously mentioned four brackets for attaching cable slings to unload these things.
 
    I am still wondering (1.) how many different types of these things Alco made and
 (2.) how many different shipyards they were transported to?
 
Thanks again for the photo, Don Valentine