The Story of Major John Wesley Powell
- A biography from Canyon Country Online.
- http://www.canyon-country.com/lakepowell/jwpowell.htm

DesertUSA: John Wesley Powell
- A detailed biographical overview.
- http://www.desertusa.com/magnov97/nov_pap/du_jwpowell.html

The American Experience: Lost in the Grand Canyon
- Companion site to the PBS series about Powell's Colorado River journey. With timeline, maps, and program information.
- http://www.pbs.org/wgbh/amex/canyon/

The Powell Expedition
- A map and account of the events of the Colorado River expedition.
- http://www.kaibab.org/powell/powexp.htm

Major John Wesley Powell
- Biography of the explorer of the Colorado River, from the John Wesley Powell Memorial Museum.
- http://www.powellmuseum.org/MajorPowell.html