Can you tell me about the times Lord Vitthal appeared to devotees in Shirdi?

Chapter 4 recounts multiple instances where devotees experienced visions of Lord Vitthal in Shirdi due to Sai Baba's grace. In one case, Baba instructed Das Ganu to organize a Name-week, promising that Vitthal's form would appear to a faithful devotee. The text confirms that at the end of the Saptah, Das Ganu did receive the sight of Vitthal. In another beautiful incident, Kakasaheb Dixit had a vision of Vitthal during his morning meditation. When he later went to see Baba, Baba surprisingly asked him, "Vitthal Patil had come, right?" The vision was further validated when a traveling seller arrived with pictures of Vitthal, one of which was an exact replica of what Kakasaheb had seen in his meditation.