@book{111407,
	author = {Mann, Horace,},
	title = {Slavery: letters and speeches},
	publisher = {Project Gutenberg,},
	year = {2023},
	address = {Salt Lake City, UT :},
	note = {From 1848 to 1851.},
	url = {https://archive.org/details/slaveryletterssp00mann_0/page/n5/mode/2up}
}