Research Results -- Juggling

Western Style juggling:
http://www.juggling.org/papers/history-1/

Western Style Juggling:
http://www.aboutfacesentertainers.com/jugglers/about_jugglers.htm

Western Style Juggling:
http://www2.bc.edu/~lewbel/jugweb/history-1.html

About Chinese style juggling:
http://www.chinastyle.cn/perfoming-arts/acrobatics/

How to learn Juggling:
http://www.twjc.co.uk/tut001.html