I've heard of Damu Anna. Could you recount his story as told in the Satcharitra?

Certainly. The story of Damu Anna is presented in Chapter 25 as a report that shows Sai's profound love for His devotees. Damu Anna was a wealthy bronze-smith from Ahmednagar who was deeply devoted to Sai Baba. A significant part of his story involves his consistent participation in the annual Ram Navami festival, for which he would provide one of two large flags for the procession as a long-standing vow. Furthermore, the chapter shares a personal miracle in his life: though he had two wives, he was childless, but he was eventually blessed with sons after receiving Sai's blessings. His story is intended to fill the hearts of listeners with joy and demonstrate Sai's mercy.