These are all Bachmann Spectrum engines, according to their site they are simply based on locomotives from the Baldwin company.
First up the beauty and scale shots:
|2-6-0 Mogul, lettered and some what modified for the Colorado & Southern. |
Not sure how close this one is to an actual C&S 2-6-0.
|The 4-4-0 American, unlettered, will definitely need to be painted.|
|The 4-6-0 Ten Wheeler, another one with a date with the paint shop|
|This probably gives you the best look at the difference in sizes|
|Another good comparison shot|