Thanks Jerry... I've got the #271 switching Durango all nice and fresh during the summer of 1940, but didn't know which unit it replaced... Then during the summer of 1942 C-18 #315 seems to have replaced #271 with a fresh "Flying Grande" paint scheme... The C-25 #375 seems to fit into that mix also, but haven't quite figured out the role it played prior to some Durango switching chores and operating the Silverton run on occaision... Will be interesting to read about the 278's where abouts between the mid 1930's and its appearance at Gunnison... Cordially... John