@book{218406,
	author = {U.S. Census Bureau.},
	title = {Census for 1820},
	publisher = {rinted by Gales & Seaton},
	year = {1821},
	address = {Washington},
	note = {"Published by authority of an Act of Congress, under the direction of the secretary of State."},
	url = {http://access.gpo.gov/GPO/LPS48040}
}