Shri Sai Satcharitra.

This holy Sai chatcharitram was written with Shri Sadguru Sainath's permission, and this character was written by Govindrao Hemadpant, and is well-known among Sai devotees. It's more than just a book to read for information. This book contains every event in Sri Sai Baba's life, amd all the good deeds he has done for his devotees. Available in many languages(English, Telugu, Tamil, ect)