Cesar Chavez, head of the National Farm Workers Organizing Committee, speaks at a meeting of the National Farm Workers Association in Delano, California. This image was published in the Valley Migrant League's Opportunity News on January 13, 1967.

Filipino farm workers attend a meeting of the National Farm Workers Association in Delano, California, where Cesar Chavez and other NFWA leaders spoke about working conditions for agricultural laborers. One man holds a sleeping child in his lap. This image was published in the Valley Migrant League's Opportunity News on January 13, 1967.

Photograph of a plydome unit which houses migrant laborers in a migrant labor camp near the town of Madison, California. The units were built by the Office of Economic Opportunity (OEO) and the Yolo County Housing Authority. This image was published in the Valley Migrant League's Opportunity News on November 25, 1966.

Photograph of a row of plydome units which house migrant laborers in a migrant labor camp near the town of Madison, California. The units were built by the Office of Economic Opportunity (OEO) and the Yolo County Housing Authority. Photographs from this series were published in the Valley Migrant League's Opportunity News on November 25, 1966.

Senator Robert Kennedy smiles as he looks out of the window of a car. Taken as Kennedy arrived to make a speech at the Latin American Conference on October 23, 1966, at the University of San Francisco in San Francisco, California. Photographs from this series were published in the Valley Migrant League's Opportunity News on November 4, 1966.

A group of nuns sit in a crowded room, holding a sign in support of Senator Robert Kennedy. The sign reads, "Bobby Kennedy." Taken at the Latin American Conference on October 23, 1966 at the University of San Francisco in San Francisco, California. Kennedy spoke at the conference. This image was published in the Valley Migrant League's Opportunity News on November 4, 1966.

Mariachi musicians play trumpets on a stage at the Latin American Conference on October 23, 1966 at the University of San Francisco in San Francisco, California. Behind them, a banner reads, "Senator Kennedy!" This image was published in the Valley Migrant League's Opportunity News on November 4, 1966.

A sign on the exterior wall of a cabin reads, "Child care center." This is the child care center in a migrant labor camp near the town of Madison, California. Photographs from this series were published in the Valley Migrant League's Opportunity News on November 25, 1966.

Several men carry signs during a protest and strike organized by the United Farm Workers Organizing Committee and the AFL-CIO against Giumarra Vineyards in California. One sign, written in Spanish, reads, "Huelga Giumarra UFWOC, AFL CIO." Likely taken in California. This image was published in the Valley Migrant League's Opportunity news on September 1, 1967.