It’s not news that Georgia O’Keeffe’s younger sister, Ida, attended Teachers College, too. But it turns out that she, too, was an extremely talented painter. In the art magazine Apollo, writer Sue Canterbury, associate curator of American art at the Dallas Museum of Art (DMA), describes her own efforts to track down Ida’s paintings (photographs of two appear in the story) and reveals that Georgia wanted her sibling to stop exhibiting her work. But Ida, who died in 1961, is now getting her first major show: “Ida O’Keeffe: Escaping Georgia’s Shadow,” running at DMA through February 14th.