In chapter 20 the Joads arrived at a Hooverville. A Hooverville was a make shift town made up of unemployed migrant workers. The people there were not very inviting, and the Joads eventually left because they didn't find work there.
January "Two children of a migrant fruit worker from Tennessee, standing before their temporary home. This family of eight is camped in a field near the packinghouse at Winter Haven, Florida." by Arthur Rothstein for the Farm Security Administration.