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This union button identifies UAW-CIO Local 659, representing Chevrolet workers in Flint, Michigan. Dated 1948–49, it comes from the post-World War II period when the United Auto Workers had firmly established itself as one of the most powerful industrial unions in the United States.

Local 659 was closely associated with the massive Chevrolet manufacturing operations in Flint, part of the General Motors industrial complex that helped make the city one of the centers of the American automobile industry. Flint also played a central role in UAW history, most famously during the 1936–1937 GM sit-down strike that helped secure union recognition.

Buttons like this were typically worn by members during union meetings, campaigns, or internal elections. The “UAW-CIO” wording reflects the era before the 1955 merger of the CIO and AFL into the AFL-CIO, placing this piece squarely within the mid-century growth of organized labor in the American auto industry.

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