@book{220305,
	author = {United States Postal Service.},
	title = {ZIP code lookup},
	publisher = {United States Postal Service},
	year = {c1996-},
	address = {Washington, D.C.},
	note = {Title from caption on web page last updated 2005 (viewed on Jan. 12, 2005)},
	url = {http://purl.access.gpo.gov/GPO/LPS14783}
}