The Miriam and Ira D. Wallach Division of Art, Prints and Photographs: Picture Collection, The New York Public Library. “Tom pursues the skeleton of Old Grindstone around the graveyard” The New York Public Library Digital Collections. 1857. https://digitalcollections.nypl.org/items/510d47e2-cceb-a3d9-e040-e00a18064a99