According to Chapter 2, were there other books or poems about Sai Baba available before the Sai Satcharitra was written? If so, what were they?

Yes, Chapter 2 explicitly mentions several other works about Sai Baba that existed before the Sai Satcharitra was composed. The author acknowledges these existing texts while justifying the need for his own. The chapter names Das Ganu's books, Bhakta-Lilamrut, which describes Sai's life in three chapters, and Santa-Kathamrut, which contains a story told by Sai in its 57th chapter. It also references Raghunath-Savitri’s Bhajanmala, which contained abhangs and verses about Baba. For Gujarati-speaking devotees, works by Amidas and Bhavani Metha existed, and a series of stories called Sai Prabha was being published in Pune.