The Mint Museum Uptown in Charlotte feels like the perfect location for a retrospective honoring early 20th-century artists from the American South—the institution, North Carolina’s first art museum, was established in 1936 and today boasts one of the largest art collections in the Southeast. “Southern/Modern: Rediscovering Southern Art From the First Half of the Twentieth Century” doesn’t pull exclusively from that collection, however. It’s a collaborative traveling exhibition that kicked off...