The Orchestra
The Orchestra: A User's Manual Double Bass
An excellent resource covering many aspects of the double bass. Most explanations are made with video and audio clips of members of the Philharmonia Orchestra. Be sure to check out the players tips and tricks section.
Other
Dave's Guitar and Bass Resource Page
This resource contains information on intervals, scales, and chords for the string bass guitar. Also includes reference charts for chords and intervals.
New York Times
New York Times: Crossword Puzzle: Musical Instruments
An interactive and printable crossword puzzle developed by the New York Times Learning Network. The theme of this puzzle is Musical Instruments.
Dallas Symphony Orchestra
Dallas Symphony Orchestra Kids: Double Bass
The double bass is the largest string instrument, and is the bass member of the family. Read about how to play this instruments and how it works. Use Windows Media Player or RealAudio to listen to samples of the double bass on it's own...