Charles Horton 
Earliest Gospels [PDF ebook] 
The Origins and Transmission of the Earliest Christian Gospels; The Contribution of the Chester Beat

Horton brings together the latest research on the origins of the gospels and their transmission, and provides the only guide to the Chester Beatty Codex P45. Provides an introduction to the gospel genre and examining literacy among early Christians and all that is known about the origins and transmission of the gospels. Also focuses on the significance of P45, its place as the earliest Christian gospel-book, its unique readings, the earliest extant version of the gospel of Mark, and how the manuscript was found piece by piece by an American collector.