"Stannard & Son's, panoramic birds-eye view of France & Prussia and the surrounding countries likely to be involved in the War, with the railways & startegic positions of each army, & the great fortresses of the Rhine provinces." Map. London: Stannard & Son, 1870. Norman B. Leventhal Map & Education Center, https://collections.leventhalmap.org/search/commonwealth:x059cb204 (accessed April 20, 2024).