Figure 1. Frederic Edwin Church, Mt. Ktaadn, 1853, oil on canvas, Yale University Art Gallery. Accessed January 10, 2016.

Figure 2. Henry D. Thoreau, "Ktaadn, and the Maine Woods. No. 1. The Wilds of the Penobscot." Sartain's Union Magazine, July 1848, 29-33. Hathi Trust, accessed January 5, 2016
