Allie Pettway worked at the Freedom Quilting Bee and probably supplied the fabric for one of her daughter Lola Pettway’s “Housetop” quilts. A “Housetop” variation at its most evocative, the quilt is formed of avocado green, tomato red, gold, beige, and brown corduroy organized into concentric boxes in nine staggered blocks that differ in size and scale, creating movements that vibrate like notes in a dance tune. Pared-down yet energetic, the quilt is anchored in the center by the strong red medallion, in a composition that overflows with confidence.