Points of Interest Map - Shows major highways, communities, and points of interest in the mountainous areas of Riverside and San Bernardino counties. Provided by California Travel and Tourism Commission in pdf format. - http://www.visitcalifornia.com/media/pages/getting_around/maps/INLAND-EMPIRE.pdf
Digital Desert - Interactive maps and thousands of photos of the Mojave High Desert points of interest, attractions and local communities - http://aeve.com/digitaldesert/index.html
Highway System Area Maps - Showing current road conditions for highways in Riverside and San Bernardino Counties. - http://www.dot.ca.gov/hq/roadinfo/do8map.htm