glyph 60: Engines of Our Ingenuity, John Lienhard, University of Houston, Texas ... black inventors, invention . enterprise ... american south . cotton gin . civil war . slaves ... informals, disenfranchised minorities ... Hernando de Soto ..... streaming audio here

"...disenfranchised minorities look unproductive because they have no franchise. Historians of technology are just beginning to see that the slave inventors we know about are only the tip of a very large iceberg."

http://www.uh.edu/engines/epi127.htm
http://www.uh.edu/engines

Complete listing of all 2593 episodes (March 20, 2010) of "Engines of Our Ingenuity":
http://www.uh.edu/engines/keywords.htm
A treasure for educators, especially for home schoolers. -leif

Radio Stations that carry "Engines":
http://www.uh.edu/engines/engstations.htm

https://explorersfoundation.org/glyphery/60.html
entered before July 9, 2006; edited/updated November 26, 2015