Zion’s Cooperative Mercantile Institution (ZCMI) is known as America’s first department store. Founded by Brigham Young in 1869, the store played a central role in the early Utah economy. Nineteenth pioneers saw ZCMI as a tool to eliminate poverty—and it was a requirement for Latter-day Saints to shop there. In this interview, Jeffrey Paul Thompson explains the fascinating history of the ZCMI department store in Salt Lake City.