“Every year as the doors of the ALA Annual Conference and Exhibition swing open, the exhibition hall comes alive—booths, banners, and brilliant minds all gathered in one place. It is a ritual that has been repeated, refined, and reimagined throughout ALA’s 150-year history. To mark this extraordinary milestone, we look back at the rich history of exhibitors at Annual—where it began, how it grew, and why, 150 years on, the exhibition floor remains one of the most vital spaces in our professional world.”