'A Short History of Ciaotannia. Adult consensual incest and the quest for equal rights, security and justice for Consanguinamorous, Consangs and CIAO people' by Dick Chernobyl is a free e-book, suitable for grown-ups. https://ciaotannia.files.wordpress.com/2023/10/ashorthistoryof-ciaotanniagalleyprintoctober12.pdf