Rouse or Lee Baby

This is from a negative loaned to me when I was in Jr High by my "Gma", Alice Rouse. Alice's first husband was a Mr Lee and they had 2 sons, Alvin and Bill. The widow, Mrs Lee, married William L Flint, in the 60s. I believe this is one of Gma's Rouse family members. She also had a brother who wrote the book, "Montana Bullwhacker" in the 60s. I know very little about the Rouse family but have plenty of interest because this was the only gma I ever knew. She was an angel.

Do you know who this Rouse baby is? Can you lead me to the family of my gma, Alice Louisa Rouse? Can you lead me to her grandchildren raised in Great Falls and Pablo, Montana?