These photos are in our family collection, along with others, that belonged to a C.C. Christie. To be honest, the relationship is vague at best to the Christie family, and I have done little research on them to date (leaving that for this coming winter.)
The images eventually came to us through my great-grand aunt, Carrie (Brown) Carlyle, who lived in Carnation, Washington.
I think it is quite apparant that they were taken on the same day, by the same photographer. The mats and image quality are identical. There is no writing and no dates anywhere on either image.