This drawing shows a throng of the faithful gathered in the nave of a church, almost certainly the Basilica of Our Lady of Guadalupe in Mexico City. The consistency of Barton’s line tends to flatten his images, but close observation reveals a thumb in the composition’s foreground, in the manner of a photographer who has accidentally obscured the lens. Just beyond and to the left, a hand holds a stem, perhaps referencing the roses in the origin story of the Virgin of Guadalupe.