Can't help thinking of the movie "Freaks" or the book "Lobster Boy," by Fred Rosen. Perhaps Katherine Dunn used these a resources, many of the themes and stories parallel this movie and book.
At first I hated Geek Love, but the more you go, the more it pulls you in.
For my own connection. I was diagnosed with dyslexia at a young age. I cover this in my own book "Rich Boy Cries For Momma" Rich Boy Cries for Momma
I was called stupid, retarded and L.D. for the learning disabled. I took the short bus to school. So reading Geek Love I could relate to the feeling of being the outcast. I too developed in to a young adult like the characters in this book, we grew to hate normal society.
Terrific descriptions. You feel as though you ran away from home and joined the circus.