Louis and Group-
The Headlight looks to me to be Milwaukee Road.
The General Electric original has been modified with the quad light group from the Mars Company. Mars was founded by a Chicago Fireman who originally developed the oscillating headlight as a warning device for Fire Trucks…..and was funded by the Mars Candy Company owners hence the name. As an aside, not only did the family name contribute to the selection of “Milky Way” for one of their candy bars; the C&NW corridor to Harvard was referred to as “the Milky Way” prior to the introduction of the candy bar.
The C&NW was an early adaptor of the Mars Light because of the influence of their important customer Mars Candy Company.
I would bet the headlight from the Milwaukee Road because of the modified larger numberboards (although the Railroad Roman numbers themselves are probably replacements). The Milwaukee was so concerned about the readability of headlight number boards that they had the Elgin Watch Company develop a special number set that was designed to improve the accuracy of being read. Many of their locomotives also had the numberboards modified to be larger (such as the E6 and E7 diesels).
Charlie Vlk