Inscription

lower center on dog collars: Carlo / Ponto

Bibliography
1966
101 Primitive Watercolors and Pastels, from the Collection of Edgar William Garbisch and Bernice Chrysler Garbisch. Exh. cat. National Gallery of Art, Washington, D.C., 1966: 47.
1974
Lipman, Jean, and Alice Winchester. The Flowering of American Folk Art. New York, 1974: fig.128.