1. Long road ahead: Migrant workers walk from farm to farm looking for jobs in Southern California in 1937
With their paltry possessions stuffed in one bag, a couple of migrant workers wearily trudge along a road in California looking for another day's wages in the fields.
The image is typical of life in the country during the Great Depression in the 1930s.
It is just one of many black-and-white photographs from the Farm Security Administration-Office of War Information Collection.

2. The collection is something of a landmark in the history of documentary photography.
They show an America on its knees, but also the defiant spirit of people living through the most severe economic slump in history.
The depression began in the U.S., starting with the stock market crash of October 29, 1929, known as Black Tuesday.
Unemployment rose to 25 per cent in the U.S., and farming and rural areas suffered as crop prices fell by up to 60 per cent
Barren lands: The increase in farm mechanization forced thousands of tenants from their homes in areas such as Childress County, Texas, in 1938

3. Faces of the Depression: Dorothea Lange's famous Migrant Mother photo depicts destitute pea pickers in California such as Florence Owens Thompson, who at the age of 32 was already a mother of seven children when she was pictured in Nipomo, California, in 1936.

4. Floyd Burroughs, of Hale County, Alabama

5. Back-breaking work: A group of Filipino labourers cut lettuce at a farm in Salinas, California, in 1935

6. A peek inside a typical home - devoid of luxuries - in the 1930s

7. A farmer and his two sons in a dust storm in Cimarron County, Oklahoma, 1936 

8. A farmer and his two sons in a dust storm in Cimarron County, Oklahoma, 1936