Besides the Sai Satcharitra itself, what other books or authors who wrote about Sai Baba are mentioned in Chapter 2?

Chapter 2 of the Sai Satcharitra mentions several other authors and works that contain stories about Sai Baba. It notes that Das Ganu wrote two books, Bhakta-Lilamrut and Santa-Kathamrut, with the former describing Shri Sai's life in three chapters and the latter containing a knowledge-story told by Sai in Chapter 57. The chapter also refers to Raghunath-Savitri’s Bhajanmala, which contains abhangs and verses about Baba. For Gujarati devotees, Amidas and Bhavani Metha are mentioned for having written miraculous stories. Finally, a series of stories called Sai Prabha was being published in Pune by some great devotees. This information from Chapter 2 highlights the existence of other devotional literature about Sai Baba even before the Satcharitra was completed.