Tristes Tropiques (1955) by Claude Levi-Strauss
	Unbounding the Future: The Nanotechnology Revolution (1991) by K. Eric Drexler
	Understanding Cultural Differences: Germans, French and Americans (1990) by Edward T. Hall
	UTF-8 (character encoding) (1992) by Ken Thompson
	Wanted (2003) by Mark Millar
	Why I Quit Mozilla (1999) by Jamie Zawinski
	Why Marriage Matters: Thirty Conclusions from the Social Sciences (2000) by Maggie Gallagher
	Why Software Is Eating the World (2011) by Marc Andreessen
	Wisdom in Small Doses (1941) by John Andrew Holmes
	Xamarin (2011) by Nat Friedman
	Ximian (1999) by Nat Friedman
	Zuni Kin and Clan (1917) by Alfred L. Kroeber
	Zuni Mythology (1935) by Ruth Benedict