This expansive yet detailed treatment of data and sources consists of 21 expert contributions divided into three parts. ... The most obvious strengths of this volume are its conceptual and structural clarity, the breadth and depth of its treatment, and the diversity of approaches taken in presenting and analyzing the manuscript evidence for each book or corpus. The expertise of the contributors taken together with the concise, dense and meticulously referenced treatments of each category of evidence make it the go-to source for anyone interested in this facet of early Christianity or this period of New Testament textual history. William L. Kelly, The Expository Times