Art Nouveau, Ozarks nature, Springfield native Chappell Roan and drag come together in artist Christine Riutzel's mural at La Roux Bistro.

How do you conserve 80-year-old murals that have accumulated decades’ worth of soot, salt and other deterioration?

The late artist Maxo Vanka created the mural in 1941, based on a scene from the Book of Exodus. It’s one of 25 murals that ...