Melgar, the Delano image was (Color 4x5), actually there are at least two images from this session, there may be more, but I have only seen two. Since there are several Delano images from the Proviso Yard, (where the caboose images were taken), I assume he was passing through Chicago on his way west.
Regarding the MTH Caboose the Bill T posted, The MTH caboose is a Santa Fe Steal Prototype (Ce 3~4? type) and the Chicago & North Western Caboose is a Woodside Caboose.
Just to add a bit more information regarding Delano images. While much of the volume of work was done in B&W, there is a fairly large collection of Color work also and much of it was shot in Chicago, not all though.
One idea that had crossed my mind is that developing color on the road was very difficult and for a traveling photographer, nearly impossible. I suspect, the proximity of a Kodak lab in Chicago might have had part in making the decision to have Jack Deleno shoot color. One correction I made, is that based on the date of the images, he would have had to shot 35mm or 828 film as 4x5 Kodachrome did not come until later. Regardless, Kodachrome or Color negative, it would still have been difficult to have processed while traveling so I do suspect his location to a Kodak lab probably had an impact on what medium he shot - this is just a guess though.
Hope this helps.
Charlie
