Mackinac Documents: Clarke Historical Library

    Receipt for 3 casks oil, and 1 box tube glasses

    Receipt for 3 casks oil

   

    signed "E. B. W." Eber Brock Ward was the keeper's son.

   

   

    Includes reference to 60 gallons of summer oil for usse of the light boat L. McLane

   

   

   

   

   

   

   

   

   

   

   

   

    Regarding the pattern of lighting the lamps initially at 20 minutes after sunset and extinguishing at 15 minutes before sunrise in clear weather. Answering the question of how much additional oil con