If by some chance you don't already know the highway-cleaning witches; the Sign of the Goo-Goo Cluster; or General Beauregard Lee, the Georgia groundhog, then you should get to know Nan Graham. For the past decade, listeners of WHQR-FM, the NPR affiliate in Wilmington, North Carolina, have heard Graham regale them with stories of the South and Southerners, subjects she knows as well as anyone. In a Magnolia Minute, Graham's second collection of humorous essays, introduces Graham's notes and observations to those unfortunates who live outside the WHQR listening area.