What are some of the most important Guru biographies from Maharashtra mentioned in the preface?

The preface highlights a few key biographical works from Maharashtra. While poets like Maharaj Shri Mahipati and Shri Dasganu Maharaj wrote collections such as Shri Bhaktalilamrut, their accounts of individual saints were brief. Chapter 0 emphasizes the rarity and importance of detailed, comprehensive works suitable for devotional reading. It specifically names two as paramount: the ancient and revered Guru Charitra by Shri Saraswati Gangadhar, and the then-recent Shri Sai Satcharita, written by the late devotee Shri Govind Raghunath alias Annasaheb Dabholkar about Shri Sai Baba Maharaj.