From the record
“Fourteen Foot Bank Light is a lighthouse in the Delaware Bay near Bowers Beach, Delaware. Built in 1885-1886 at the south end of Joe Flogger Shoal, it was the first lighthouse to be built using a pneumatic caisson.”
Wikipedia article Fourteen Foot Bank Light, CC BY-SA 4.0.
One of 136 National Register listings published here for Kent County · listed in 1989 · category: Structure · built in 1886.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service