James McNeill Whistler spent his career tearing down sentimentality in art, demanding to be judged purely on form and color. History answered by remembering him as the creator of the world's most recognizable symbol of maternal devotion. This deep dive traces the origin of Arrangement in Grey and Black No. 1, painted in 1871 at his Chelsea home on Cheyne Walk after a hired model failed to show up and his 67-year-old mother, Anna McNeill Whistler, stepped in. Because she could not hold a standing pose, she sat in profile, handing Whistler the stark geometric composition he became obsessed with.

The episode follows the painting into the Royal Academy exhibition of 1872, where the committee nearly rejected it and forced Whistler to append the subtitle Portrait of the Painter's Mother, a humiliation that led him to never submit to the Academy a ...