Dauphin Island, AL
Archive of Historical Data, Books, Maps
And Other Materials

Iron decking at the top level "Lantern Room" which included a dozen or so round plates which housed glass prisms. At night, while the light was in operation, the light house keepers would be on duty in the floor below in the "Watch Room." The prisms reflacted light from the upper room so the personnel could keep an eye on the briteness of the light signal. When the whale oil ran low and the light dimmed, the prisms displayed to the lighthouse keeper the need for refueling. Thompson Engineering 2007 photo included in their Restoration Plan for the structure...