This week’s category of the Sapphic Book Bingo features co-authored sapphic books, meaning books that have been written as a collaboration of at least two writers. 

It can’t be an anthology in which each author worked on their story independently or a book that uses two different pen names of the same author on the cover. 

Most of the time, both authors names will be on the cover, but sometimes, the authors also create a pen name that they use for their co-authored books, so you might have to do a bit of research to find out which books have really been created by two (or more) different authors.