I got interested in the possibiity of building a live steam donkey and began looking for sources. I looked at small engines on eBay and decided the prices were too much for what looked like worn out toys listed as 'Vintage'.... I just love that description! Or, 'untested'.....'I don't know how to run these'.....! Then there were kits, with castings and some hunks of raw metal....$100 up to nearlty $300. Being both poor.., and cheap, I started looking for plans. I found a great site with plans for all the steam engines one could ever want! So here it is: http://john-tom.com/ElmersEngines/ Even if you don't want to build one, good reference material!