Philadelphia Museum of Art, Rijksmuseum (Netherlands), Jacobowitz, E. S., & Marcus, G. H. (1982). American graphics, 1860 to 1940: Selected from the collection of the Philadelphia Museum of Art. Philadelphia Museum of Art.
Lua i Stíl Chicago (17ú heag.)Philadelphia Museum of Art, Rijksmuseum (Netherlands), Ellen S. Jacobowitz, agus George H. Marcus. American Graphics, 1860 to 1940: Selected from the Collection of the Philadelphia Museum of Art. Philadelphia, Pa.: Philadelphia Museum of Art, 1982.
Lua MLA (8ú heag.)Philadelphia Museum of Art, et al. American Graphics, 1860 to 1940: Selected from the Collection of the Philadelphia Museum of Art. Philadelphia Museum of Art, 1982.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.