barren landscape during the dust bowl era depicting drought and its devastating effects on farmland

barren landscape dust bowl era united states history great depression drought arid climate farming crisis environmental disaster midwest plains soil erosion windstorms storms black blizzards okie oklahoma texas panhandle kansas nebraska agriculture wheat belt depressionera poverty migrant farmworkers refugees pneumonia economic hardship dorothea lange documentary american experience resettlement camps federal relief administration works progress rural america social welfare programs homestead act deal policies