Citation
Unknown. “Landscape near [Ching Lung Chiao, Chihli?], China. View of the Great Wall of China which shows a portion of this wonder of the world from a position just above the watch tower to the west, a [portion] of which is shown here. The view also shows very well the general character and appearance of the country here. The wall is reported to be 1500 miles in length. Photograph #45623..” Special Collections, USDA National Agricultural Library. Accessed August 25, 2024, https://www.nal.usda.gov/exhibits/speccoll/items/show/338.