For those who will be celebrating/observing Juneteenth I would offer a mention of this new book.
Especially those in Texas and of color where Juneteenth seems to really be taken seriously. Teachers should know of this book too. In the time of slavery in Texas, the Mexican people opposed slavery as they had been oppressed by the Spanish and it was a moral issue to them.
The authors of this book point to the 1794-1800 era where the Cotton Gin in America and the British industrial textile boom set the ground work for massive cotton production with slave labor in America. New Orleans became America's largest Slave port and 3rd largest city in this same time period. And much of these attitudes carry on today.
The only other book I've read that has so much information & insights regarding abolition of Slavery was, "Confederates in the Attic" by Tony Horwitz
Forget the Alamo: The Rise and Fall of an American Myth
https://www.amazon.com/Forget-Alamo-.../dp/1984880098