the full article from the SDOT blog:
 |
| Engineering Sketch of Modern 3-light Traffic Signal |
Garrett Morgan Inventor Father Social Activist
Garrett Morgan patents 3-position traffic signal History.com
Inventor Garrett Morgan on Biography.com
Friday, February 21, 2020
Black History Month Binge Blog: Garrett Morgan
RantWoman thanks @SeattleDot for this link celebrating #BlackHistoryMonth2020 .
the full article from the SDOT blog:
Garrett Morgan Inventor Father Social Activist
Garrett Morgan patents 3-position traffic signal History.com
Inventor Garrett Morgan on Biography.com
the full article from the SDOT blog:
Garrett Morgan Inventor Father Social Activist
Garrett Morgan patents 3-position traffic signal History.com
Inventor Garrett Morgan on Biography.com
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