Here are some more links to get more information:
http://volcano.und.edu/vwdocs/volc_images/north_america/baker.html
http://en.wikipedia.org/wiki/Mount_Baker
http://vulcan.wr.usgs.gov/Volcanoes/Baker/framework.html
http://vulcan.wr.usgs.gov/Volcanoes/Baker/Locale/framework.html