When Air Force vet Nicholas Timm, 40, bought a dilapidated building in Okanogan, Washington, at the end of last year, he stumbled upon a lost work of art behind the walls. Carrying out demolition work with his crew in January, he was removing plaster from a wall when he glimpsed something unexpected. “A spot caught my eye,” Timm told The Epoch Times. “I was looking at it and I was like guys, I told my guys, I think there’s a painting back here.” Despite being minutes away from putting up fresh walls, a shock of color captured their curiosity and the team began peeling back layers to see what lay underneath. To Timm’s amazement, it was a 100-year-old mural. “We just kept finding more and more of this amazing picture,” he said. “And then one of my other guys says, hey, I bet there’s another one on the opposite wall. And, …