There are no less than ten variations on this locomotive built so far,
including 0-4-4 (Forney), 2-6-0, 2-6-2T, 0-4-0T, 0-4-0 (Camel back) here are a few of them.

Click on the image above to open the gallery, you can navigate through the gallery by moving your mouse to the right (next) or left (previous) of the image.