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What were those 1870 buttons all about?
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State of the Union: What's the meaning behind 1870 pin? | 12newsnow.com
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What is the 1870 button lawmakers were wearing during the State of the Union? We explain.
State of the Union: What the 1870, crayon lapel pins mean
Three Button Blankets (Tlingit or Haida, 1865-1890 and Kwakwaka'wakaw, 2016) – Textiles in Context
1870 Meaning: Why Lawmakers Are Wearing Black Button at SOTUS – NBC New York
State of the Union: What's the meaning behind 1870 pin? | cbs8.com
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State of the Union: 1870 and Crayon Pins Explained
