I have an essay due on friday but can't find a book there was none in the library, what should i do? i need 1

I have to have at least one resource that is a book, im doing an essay on salem witch trials but all the books about that in the library are gone, it is due in 2 days and i don't have a book. what can i do? i was told i can't use an encyclopedia so that's out too.