Great Britain. Hydrographic OfficeJ. & C. Walker (Firm)J.D. Potter Ltd.Vidal, Alexander Thomas Emeric, 1792-1863.(W 26°00ʻ--W 25°00ʻ/N 38°00ʻ--N37°35ʻ). "Large corrections June 1873"--center below neat line & "Small corrections XII-82 ... X-06"--lower left. "London published ... " "Sold by J.D. Potter, Agent for the Admiralty Charts, 145 Minories." Relief shown by hachures, soundings, and spot heights. Includes 3 cross sections and 3 insets: Caldeira das sete cidades, [scale approximately 1:32,000] -- Ponta Delgada, [scale approximately 1:10,000]-- Villa Franca road, [scale approximately 1:20,000].46 x 60 centimetersJPEGUMN_ALMA:9924127610001701engPublisher not identified. (London)PublicSan Miguel, Azores, 1844MapsPortugal1844University of Minnesota