Labuste's typological, technical and spatial solutions spread to America and can be traced through the works of McKim, Mead and White, Louis Sullivan and Henry Hornbostel: each of they exhibit Identity of the École des Beaux-Arts. Labrouste's statement that, “in architecture, every form has its logic and its logical consequences... that a work of art has a meaning, that its form is the result of a set of deductions that follow one another, that satisfies a need, and that expresses an idea” (Bergdoll, 2012) seems to have influenced Sullivan and then resonated through history to tall steel-framed buildings in the United States of America. The modern code of expressed metallic structure and light casing appeared in the iridescent vaults of the Bibliothèque