This book looks like an excellent reference for anyone interested in the study of the biblical canon: The Biblical Canon Lists from Early Christianity: Texts and Analysis.
A brief discussion of the book by one of its authors can be found here. The book will ship in January 2018. That summary reads in part:
The main attraction of the book–the reason you’ll want your own copy–is because John and I have collected all the biblical canon lists from the first four centuries of Christianity, and we present them in the original languages and English translation (in parallel columns) with introductions and extensive notes. So, you’ve heard so much about the 39th Festal Letter of Athanasius, which listed for the first time in history the exact 27 books of the NT that we now accept, and you’d like to read the letter for yourself–our book has it, or the extant portions in Greek, anyway, with an English translation. Read the letter for yourself.