From collection Everett "Red" Boutilier Collection
LB.2005.24.6488
Unidentified Caisson light house Caisson lighthouse. A caisson lighthouse (also referred to as a sparkplug lighthouse, or bug light) is a type of lighthouse whose superstructure rests on a concrete or metal caisson. Caisson lighthouses were developed in the late nineteenth century as a cheaper alternative to screwpile lighthouses.
