i read about this on a photography forum and i'm not sure 'essay' is the right word.  it was so simple yet so completely powerful:

common ground

a photojournalist spent years documenting a working farm and then returned to photograph the families who moved into the new suburb that was built on the farm years later.  i'm awed not just by the photographer's photos, but the way he was able to edit them to show how much the two cultures have in common.  very powerful - check it out.