For Wed 3/4 you need to read 2 articles: this one on the lighthouse in Montauk, NY and the article in the post below this one about the Grand Canyon.
Montauk Point Lighthouse on the tip of Long Island, NY - built 1796map of the area - notice where it is located on Long Island
Montauk Lighthouse as viewed from the Atlantic
Montauk Lighthouse erosion:
New York Times
print date: Nov 21, 2006
http://www.nytimes.com/2006/11/21/science/earth/21comm.html?scp=3&sq=montaul%20lighthouse&st=cse