Regular followers of my research will find references to this invaluable publication in almost every article which includes some discussion of American model engines. This ground-breaking work consists of two volumes, the more recent of which was released in its greatly expanded Volume 2 edition in 2015. This brought the story up to 2015.
Prior to compiling the two volumes of AMEE, the author, my late friend and colleague Tim Dannels, had been publishing the "Engine Collectors' Journal" (ECJ) for decades, with the result that there was no-one more knowledgeable than Tim on the subject of American model engines in general. The books in essence form an illustrated 2-volume catalog, including images and commentary on every known model engine which was manufactured commercially in America from 1911 to 2015. Since the entries are arranged alphabetically, finding the engine that you want is very easy indeed.
No-one with even a peripheral interest in American model engines can afford to be without a copy of this outstanding work. Although both volumes are now out of print, I expect that copies will surface on venues such as eBay for years to come.