"As slaves relentlessly toiled in an unjust system in 19th century Louisiana, they all counted down the days until Sunday, when at least for half a day they were briefly able to congregate in Congo Square in New Orleans. Here they were free to set up an open market, sing, dance, and play music. They were free to forget their cares, their struggles, and their oppression. This story chronicles slaves' duties each day, from chopping logs on Mondays to...