An excellent series of full panoramic photos of the Katrina disaster made by photographer
Edward Fink shortly after Katrina from a helicopter 700 feet in the air. This site now includes photography showing the recovery in the Gulf Coast area.
The series was first seen on the Washington Post website and his website
bigeyeinthesky.com, which has the whole series, is linked here. The photos were shot several weeks after Katrina before any debris was removed.