Physical Geography: A Landscape Appreciation, 6e - Tom Mcknight's textbook page at Prentice-Hall.
Fundamentals of Physical Geography - a superb online textbook. A great, free reference. Very nice diagrams and graphs.
About.com Geography Page - (free commercial site) highly organized list of geographic resources from many sources. Possibly the only resource list you'll ever need.
Weather Maps on the Web - my list of US and Southern California weather map links for quick weather analysis.
Age of the Earth - simple history of ideas regarding age of the earth.
Visible Earth - brilliant satellite images categorized by physical geography topic.
Last Published 7/14/16