Hi,
Nice work, for other members - the Kansas Central also sent some of its boxcars to the (2nd) successor to the CCRR & the DSP&PRR - the first was of course the Union Pacific Denver & Gulf, then after financial wrangling it became the Denver, Leadville & Gunnison RR. The first name was about is about 1889 or so. All were then in the control of the Union Pacific and there seems to have been quite a movement of cars, the Kansas Central & the Utah Northern were both changed to standard Gauge, so the then redundant cars were shipped to Colorado, when the line(s) were re-organozed under the contraol of a Colorado based receiver for the combined railroads. Evejntually both RR's were the Colrado & Southern!
OK history lesson over!
I like your 'supposition' for your railroad - Bravo!