Bill I have seen some poor drawings of the DSP&P 2-6-0 locos but I can not seem to find them. It seems like they were in a paper back magazine type of publication called "Short & Narrow Rails", but I can not find that copy. Did you try the NG&SL Gazette index on the net at;
[www.urbaneagle.com]
I think a few real original builders drawings of the C&S/DSP&P 2-6-0's are out there, but not more than a few.
David