在18世纪,路易斯安那的法国和西班牙殖民时代,通常允许奴隶在周日不用工作。他们聚集在壁垒街后面的“刚果广场”,唱歌,跳舞,演奏音乐。 PeterKolchin, American Slavery, Penguin History, paperback edition, 47 Thomas L Morgan
Eastern Europe," Journal of Economic History March 1973 33:86-99 in JSTOR Kolchin, Peter. Unfree labor: American slavery and Russian serfdom(2009) Moon, David
Slavery in America. Infobase Publishing. 2007: 554. ISBN 978-1438108131. Kolchin, Peter. American Slavery, 1619–1877 2nd. New York: Hill and Wang. 2003. ISBN 978-0809016303