The 48-star field, filling the panel
The blue canton, top-left, with its grid of white stars, and the whole flag running clean to all four edges
Count the stars: there are forty-eight, not fifty, and that is correct, not a mistake. The U.S. flag carried forty-eight stars from 1912 until 1959, when Alaska and Hawaii were admitted, so a 1954 flag has exactly this canton. The deeper point is where the flag sits: it is not in a picture, with sky or a pole or a wall around it. It is the picture, edge to edge, with no border and no room left over. That coextensiveness, the flag exactly filling the rectangle, is the whole engine of the work.