Re: research info needed on C&S 638-Correction

C&S Excursions I have pictured here are
6/30/57 #909 (to Ft. Collins and return)
6/30/57 #648 (Ft. Collins to Greeley)
6/9/59 CB&Q #5626 (Palmer Lake)
6/10/59 CB&Q #5626 (Denver to Loveland)(Special Charter)
6/10/59 CB&Q #5626 (Denver to Ft. Collins)
7/19/59 #647 (to Ft. Collins)
7/19/59 #900 (to Denver)
10/25/59 #647 (to Lyons + return)
4/13/60 #638 (Pictures in Denver and Boulder)
Dad took several pictures of #638 in Denver the day before this excursion. It had been moved down from Leadville for an overhaul and was being placed into Yard service in Denver.
I thought I had more in the books I have, but that's it. There were several more excursions that must have come later in 60-62. I remember #638 very well.
Greg you are right, I don't think #638 was in any excursion service until after 4/60.