This thread has wandered away from its original subject, so I'll continue. In the 1890's, Baldwin built a lot little 0-4-0T engines similar to the Henschel and Krauss engines. They were, if you will, the forklift and dump truck of their day. All sorts of factories, breweries, mills, foundries, etc. used them for materials handling as their operations grew beyond the capacity of humans and animals to efficiently move materials from one place to another. At one point, Baldwin even had a leasing arm which leased a fleet of these little lokies by the month or year. Recently, one of these small engines was found somewhere in northern New Jersey and has been rescued. I believe it even carries a lease plate on its boiler.