Yep Hog Island and Cape Fear are the missing "Rawley" class towers. Cape Fear was dynamited in 1958 when Oak Island came online. Hog Island was dynamited in 1948 as the island was rapidly eroding away. Wvlights0 you get the next question.

Lighthouse friends has a cool picture of what they call Cape Fear. Actually this is a picture of Hog Island.

http://www.lighthousefriends.com/capefearexplosion_2006.jpg