Id say the first is probably late 1930s. I'm just going off of her clothes, hair and the general look of the photograph (stark contrast and that ratio strike me as similar to other photos I've seen from the '30s). The latter two I'd say were taken in the 1940s. As another poster pointed out, I believe the car in the second photograph is much more 1940's style. Additionally, the woman looks quite a bit older around the eyes. Also some facial drooping. As for the third photo, it also strikes me as 1940s, though I'm genuinely unsure where it falls concerning the other two photos.
