Bessie Coleman, the daughter of a poor, southern, African American family, became one of the most famous women and African Americans in aviation history. "An awesome trajectory. What happened to Jessie?
Let There Be Light by Wishum Gregory: Dedicated to African-American Freemasons
Elijah McCoy invented an oil-dripping cup for trains. Other inventors tried to copy McCoy's oil-dripping cup. But none of the other cups worked as well as his, so customers started asking for "the real McCoy." That's where the expression comes from.