The literary genre of "thumb bibles" belongs to the category of miniature books and is a subtype of children's bibles. Thumb bibles summarize the full bible by paraphrasing selected biblical narratives. Adhering to the Reformation principle of sola scriptura, their aim is to teach children and youth the biblical basics. For this purpose, many of them are illustrated. Popular with collectors, thumb bibles have largely been ignored by researchers. This publication is the first academic study of thumb bibles. For the first time in their centuries-long history, it explores their genesis in Britain, investigates their subsequent development in Germany, and presents their climax in America. What emerges is the theological, literary, pedagogical and pious profile of a fascinating genre. This book is a translation of Daumen-Bibel: Eine Untersuchung zu Geschichte und Profil einer literarischen Gattung (V&R unipress, 2021).