I'm not sure this photo is sepia and it's only 1947; recent compared to most of the posts.
Pearl lived with my grandmother Lucy and her 2 maiden sisters in a large house next to the church and I saw her every Sunday. In her sixties she was officially diagnosed as a schizophrenic but for most of her life she had acted a "bit odd" as her sisters used to put it. For example, she took naps in a large dresser drawer - disconcerting for the adults, but a great idea as far as me and my young cousins were concerned. We loved her because she was small and her quirkiness made her a lot of fun.
Pearl's memory was prodigious and the family used her like a laptop computer. On demand, she could reel off all the family dates of significance: birthdays, anniversaries, engagements, deaths plus she kept very close tabs on the weather and the weather statistics - a particular specialty. Pearl's peculiarities were easily tolerated in that unconventional family; there seemed to be enough psychological space or elasticity to accommodate her undeniable strangeness. She didn't leave the house often - this photo was taken on a very rare visit to our house. As you can see they were barely enduring the visit and didn't even take their coats off. Until I first experienced Pearl in a context outside of her house in a "normal" situation, I never realized how different she was. And because I had a crazy little aunt, I assumed everyone else must have one too! Of course, later I realized the down side of having a crazy aunt both for her and for the family. Much, much later I realized how lucky we were to learn about tolerance and diversity as youngsters.