The Bosphorus and Constantinople by E. Stanford

Image Source: 

FO 925/3104: The Bosphorus and Constantinople. 1:95,040. E. Stanford, London." The National Archives: Selected Maps Representing the Long 19th Century, Primary Source Media, 1877. Nineteenth Century Collections Online, tinyurl.galegroup.com/tinyurl/4FxjV5. Accessed 1 Feb. 2017.