The text mentions two major Guru biographies suitable for detailed study in Maharashtra. One is the Shri Sai Satcharita. What is the other one and what makes it notable?

Besides the Shri Sai Satcharita, the other major Guru biography highlighted in the preface of Chapter 0 is the Brihat or Thorale Guru Charitra. This work is a sweet, succulent, and graceful biography written by Shri Saraswati Gangadhar about Shri Samarth Sadguru Narsimha Saraswati Maharaj. Its notability comes from its widespread popularity and use; the text states it is well known to young and old, studied daily in thousands of places, and frequently used for Parayans. Along with the Shri Sai Satcharita, it stands out as a rare example of a detailed, poetic, and comprehensive work ideal for deep devotional practice.