Number 90 posted:If 37 is the same number it carried on Santa Fe, then it was assigned to a Grand Division, for use by the General Manager. It does not look like the 38 and 39, which were modernized with sealed windows.
Chico was the advertising mascot of the Passenger Traffic Department -- the little Navajo kid who drew "Santa Fe All the Way" in the sand with a stick. Chico, California, is offline, on the Western Pacific.
I have this old magazine page in my train room, a copy of the well-known Santa Fe ad. A very knowledgeable rail buff and former rail employee I knew told me one time that "chico" was not actually the name of the Navaho boy. It was not a proper name, but more of a descriptive term, like "little one" or something of that nature. Note that the word "chico" is not capitalized in the text, as it would be if it were a person's name. Kind of interesting.