2008 SOUTH LOUISIANA AERIAL PHOTOGRAPHY NOW AVAILABLE ONLINE
From LACoast.gov:
South Louisiana (south of 31 degrees latitude) aerial photography taken in 2008, in color infrared (CIR) format and at one-meter resolution, is now available at the Louisiana Department of Natural Resources / Louisiana Office of Coastal Protection and Restoration’s SONRIS GIS website.
The SONRIS GIS website can be reached in a few different ways, one of which is via this URL:
http://sonris-www.dnr.state.la.us/gis/sonris/viewer.htm
Google earth has a new feature where you can show historic images of a location at different dates.