This authoritative book is an anthology of evidence from the Upaniṣads and Purāṇ

This authoritative book is an anthology of evidence from the Upaniṣads and Purāṇas like Śrīmad-Bhāgavatam that establishes Śrī Caitanya Mahāprabhu as the original Supreme Personality of Godhead and the source of all incarnations of the Supreme Lord.
In the case of discerning the truth about the Lord’s incarnations, only two kinds of evidence are acceptable. The first is evidence extracted from the bona fide scriptures, and the second is taken from the realization of great devotees, who are expert in the philosophical conclusions of the Vedic scriptures and who have had a direct experience of the Absolute Truth. This book is a limited collection of both kinds of evidence.