This is a photo of Donna Wright with her cousin, Earl Wright, taken in 1938.

I don’t know exactly when in 1938 this photo was taken, or what the occasion was. The print has a processing date of September 23 stamped on the back. Presumably it was taken days to maybe a month or two before that date. That would make Donna 3½, approaching four. Earl was less than a year old, surely.
This photo is such a study in contrasts! Donna is small for her age, Earl is not. Donna looks pensive, Earl looks happy. Donna’s shoes are dirty and well-worn (no doubt because she was always on the go), Earl’s are clean and white (no doubt because he wasn’t even walking yet).
I wonder why only Donna and Earl are in the photo. Donna’s sister Clara would have been about 1½ years old when this photo was taken. Seems strange that she wasn’t in it, too. A third sister, Kathryn, had arrived just three months or so before, so it is less of a surprise that she was not included.
This previous post includes a photo of the Lloyd Wright family taken within months of this photo.