Wikimedia
Wikipedia: Muromachi Period
Wikipedia provides information on the Muromachi Period of Japanese history running from 1336 to 1575. Also has a chart showing the Ashikaga family tree.
Other
Japan guide.com: The Muromachi Period
This site gives a brief basic overview of political rule in the Muromachi period.
ibiblio
Ibiblio: Web Museum: Muromachi Art
This site gives a brief description of the period and describes the period's art, including painting and architecture.
Columbia University
The Era of Wars: Onin War
In this page there is information pertaining to the Onin War and the factors that influenced it.
Other
Muromachi Period: Decline of Influence
This site describes the gradual loss of central influence by the Muromachi Bakufu.