It's a nice drawing, love the colors, however there are technical inaccuracies in the running gear.
Get ahold of librarian Cynthia Franco at the DeGolyer Library of Southern Methodist University in Texas. From their Baldwin Locomotive Works drawing collection order Index #520-55 which has on it the Erecting Cards #11645 & #11780.
Erecting Card #11645 was used to build Baldwin Locomotive 4-11C-429 for the Hydraulic Press Brick Co. in 1924
Erecting Card #11780 was used to build Baldwin Locomotive 4-11C-431 for the Raritan River Sand Co. in 1925
Of course 4-11C-431 is the "Earnest S. Marsh" as-built.
*EDIT* Yes, I realize this is an old topic, but I didn't know the original Baldwin Erecting Card existed for the Marsh when this topic was started in 2010. *EDIT*
Curtis, can you give us some more detail? When you order index 520-55, what is sent? A hard copy? Or can it be e-mailed? Is there a cost?
What is the inaccuracies in the running gear?