Circa 1850 Drawing: Mechanical Lamp For Bioptric Light For Lighthouse - Antique . Maritime history! Approximately 12”x7.5” Original print. Not a modern reproduction! Over 170 years old These drawings are from the 1852 published book: Executive Documents Printed by Order of the Senate of The United States During The 1st Session of The 32nd Congress 1851-2 vol 6. Printed by A. Boyd Hamilton USPS Priority shipping
