Baldwin Records

Hi,
I was looking through some Baldwin Records I have looking for Georgia related narrow gauges.
I came across an entry in the raw copy that is the London, South Park and Leadville railroad. Baldwin builder's number 6691. Obviously that caught my attention.
From the corrected list, I found
6691 3' 2-8-0 3.1883 Denver, South Park & Leadville, J.L. MERICK
Having not recalled the DSP&L, I looked up in Colorado Rail Annual 12 and the index references the railroad on page 10. I lost the trail there. I am sure it is in the book, I'm just thick today trying to find it. However there was a Denver, South Park & Rio Grande on page 10.
I assume the DSP&L preceded the DSP&P. Baldwin 6691 does not seem to show up on the DSP&P roster in Colorado Rail Annual 12.
Anyone know anything about this locomotive or the DSP&L?
Thanks.
Doug