I am in New Orleans with supporters of the National Trust for Historic Preservation on a visit to see how the city is recovering in the three and one-half years since Hurricane Katrina made landfall.  I’ve been in the city many times – and several since Katrina hit – but on this trip I found a couple of gems that tell me that I really haven’t seen all this great city has to offer. First, an update on our work.  The National Trust had staff on the ground just weeks after Katrina hit, and we still maintain an office where we help homeowners – primarily in the historic Holy Cross neighborhood of the Lower Ninth Ward – rebuild their homes and their lives.  Meeting the homeowners we’ve helped, seeing the way ravaged buildings have been turned back into beautiful homes, and listening to the volunteers and partners who’ve helped us in this recovery is always inspiring and gratifying.   In Holy Cross you can’t walk down the streets without seeing our Home Again signs, or those …