The series started on Sept. 11, and has been running every Thursday. Dunlap explains his assignment:
Because I can still remember what the weather was like on the days I took these pictures, what the city sounded and smelled like, I was startled to look through my contact sheets recently and realize how much Manhattan had changed. New York did not just crawl out of its near-collapse in the mid-70s, it had boomed almost without interruption. Towers were inserted. Landmarks were deleted. And even in cityscapes that looked unchanged, I knew that far wealthier occupants -- residential and commercial -- could now be found behind familiar old facades.
My editors and I thought that pairing photos from then and now would be a graphic way to examine the phenomenon of urban churn that so defines this city. The series will visit a dozen or so neighborhoods, uptown and downtown, before the end of 2008. Each diptych tells its own tale, but the overall story is clear: It doesn't take much longer than a generation for New York to regenerate itself completely.
You can see the whole series here.