In the depths of the worldwide Depression, 1933, some fourteen million people in the U.S. were out of work; many were homeless, drifting aimlessly, often without enough food to eat. In the midwest and southwest drought and dust storms added to the economic havoc. During the decade of the 1930s some 300,000 men, women, and children migrated west to California, hoping to find work. Broadly, these migrant families were called by the opprobrium "Okies" (as from Oklahoma) regardless of where they came from. They traveled in old, dilapidated cars or trucks, wandering from place to place to follow the crops. Lange began to photograph these luckless folk, leaving her studio to document their lives in the streets and roads of California. She roamed the byways with her camera, portraying the extent of the social and economic upheaval of the Depression. It is here that Lange found her purpose and direction as a photographer. She was no longer a portraitist; but neither was she a photojournalist. Instead, she became known as one of the first of a new kind, a "documentary" photographer.