“It’s risky to call any office building a masterwork. Even the most insightful architecture can prove too inflexible in the face of changing business models, advancing technologies and the volatile fate of companies themselves. Yet Wright’s design for H.F. Johnson Jr., the third-generation leader of what was then called S.C. Johnson & Son, endures both because of the innate intelligence of its design and the pride the family-owned company takes in it.”