This is Katherine Venturelli’s book “Alchemic Calculations”, which uses a Turkish Map Fold. She says it “integrates some of the archetypal symbols from my on-going series, “universal language”; the symbolic images are my text. I fused a friend’s beautiful mathematical notations with etched spirals at each of the folds of the traditional accordion structure. Inspired by the medieval science of alchemy, included is the metallic element of silver leaf- a symbol of power or process of transforming something common into something precious.” See more of her books here.
