Trees planted in a shelterbelt strip on the farm of Dr. H. Bungardt near Corbell, Okla., grew so rapidly within four years that he had to ask the forest service to thin them out. Here a forester is shown cutting out one of the trees, April 7, 1939. Many of the tress have grown to a height of 35 feet, stopping effectively the dust-eating prairee winds. (AP Photo)

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