This collection investigates the historical and doctrinal evolution of Buddhism through the lens of primary source documentation. Edwin Michael Wheeler compiles a range of contemporary records to provide a structured overview of how Buddhist thought and practice were documented across various historical periods. The work serves as a reference framework for understanding the intersection of religious tradition and archival evidence.

Scholars and students of religious history frequently utilize this collection as a foundational resource for accessing primary source material. The text is noted for its objective presentation of historical records, making it a useful reference for those seeking to understand the documentary history of the tradition.