Dorothea Lange ( May 25 1895 â `` October 11 1965 ) was an influential American documentary photographer and photojournalist , best known for her Depression-era work for the Farm Security Administration ( FSA ) . Dorothea Lange ( May 26 , 1895 â `` October 11 , 1965 ) was an influential American documentary photographer and photojournalist , best known for her Depression-era work for the Farm Security Administration ( FSA ) .