Author Dee Michel's upcoming book is Friends of Dorothy: Why Gay Boys and Gay Men Love The Wizard of Oz. Dee recently reached out to me to license my painting Once In A Lullaby in the publication, and I was happy to oblige.
Dee has been a contributor to The Baum Bugle, the official journal (est. 1957) of the International Wizard of Oz Club, so is a bit of an expert. The book is expected this Summer.