Niklaus Troxler is a Swiss graphic designer who spent more than three decades organizing the Willisau Jazz Festival, and the posters he made for it became some of the most celebrated work in late 20th-century graphic design. Each one treated jazz not as a genre to illustrate literally but as a formal problem: how do rhythm, improvisation, and energy translate into color and shape? The period originals from that run are the heart of what this collection represents.