FILE - This March 29, 1937 file photo shows rippling dunes banked against a fence, farm home, barn and windmill in Guymon, Okla. abandoned by its owner when destructive dust clouds forced him to leave. The Oklahoma and Texas panhandles, the geographic center of the 1930s Dust Bowl, are hoping for an uptick in tourism following a two-part television series about what many call the nation’s worst man-made disaster. PBS’ series on “The Dust Bowl” concluded Monday, Nov. 19, 2012. (AP Photo, File)