This retail enterprise, which would become one of Chicago's leading department stores, was founded in 1855 by Bavarian immigrants Solomon Mandel and his uncle Simon Klein. Their first store was located on Clark Street. In 1865, after Solomon's brothers Leon and Emanuel joined the firm, its name became Mandel Bros. Purchasing in New York and Paris and selling in Chicago, the enterprise grew. By the 1880s, its new store on the corner of State and Madison Streets employed about 800 people. By the beginning of the twentieth century, the workforce had grown to over 3,000 people. Rebuilt in 1912 and renovated in 1948, the State Street store continued to operate into the 1970s, when the company folded amid State Street's demise as a major retail center.

This entry is part of the Encyclopedia's Dictionary of Leading Chicago Businesses (1820-2000) that was prepared by Mark R. Wilson, with additional contributions from Stephen R. Porter and Janice L. Reiff.