I'm not sure which Chicago sanitorium you have in mind for your great aunt. There's a children's hospital, La Rabida, that I know had TB patients in the 30's and 40's. They've been around since 1896. I've the same trouble with my great grandmother--closest I can come to a death record is mention of her death in her sister's obit. My grandmother died 2 days after her sister and it was mentioned that some of the family couldn't stay for the services due to her untimely death. Joan in Illinois