August Sander. Farming Couple – Propriety and Harmony. 1912.
"In the photograph, "Country Girls," 1925, two sturdy blond girls stand stiffly before the camera holding hands and wearing identical dark dresses and watches. It seems safe to assume they are sisters, so closely do they resemble each other in appearance, expression and manner. Indeed, their similarity and closeness is as disquieting as a Diane Arbus photograph, for their dark dresses visually give the impression of one large shape with two heads emerging from it."