I decided to rewatch the whole series before Season 3 begins, and I caught this while watching The Cutie Pox.
American Gothic reference S02E06


When Granny Smith, Big Macintosh and Applejack congratulate Applebloom on 2 cutie marks, you find this painting/photograph above Applejack's head. Who are these ponies? Their's obviously a reason for them being their in their house, but why?