To clarify a bit:
Light station A is completely gone, but is being rebuilt. It is on John's list of Native American lighthouse names.
Light station B is gone, but the spider foundation remains and Rosalie has a picture of it here on the forum.
Both of these Chesapeake Bay cottage style lighthouses were originally designed to sit on caissons, rather than screwpiles. Due to budgets, they were built as cottage screwpiles.

To add a little more...
A was first served by Lightship 25 and then 2 consecutive cottage style lighthouses.