United Farm Workers propaganda process sketches

Sketch on tracing paper working out a concept for what may be a poster or image for another printed piece about farm worker rights. 

Sketch shows the challenges the Farm Worker was up against:
Farm Bureau
Grower Propaganda
Right to Work

In the background, the United Farm Worker eagle logo is spread with the text “Keep him out of their clutches while he works himself upward.” and on the other wing— “Arriba.

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It's difficult to determine if this was created by someone within the organization or an ally.

The date below is a guess.

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Acquired at an estate sale of a prominent book dealer in Portland, OR.