Double-sided photograph

Grafton, Neva, and I were looking at a framed photograph of Neva walking off into the distance on a beach on Cape Cod. Grafton was holding the frame in his hands, intently studying the picture when he commented, "That's Mommy on the beach".  We confirmed his observation and then he asked "Where's Daddy?"  We told him that Daddy wasn't in the picture because he was the photographer behind the camera.  To verify our claim, Grafton flipped the frame around to see if his Dad was on the other side. (Or maybe he just wanted to see if his Mommy's face could be seen on the flip side?)