National Park Service Online, Medical Supplies of the Lewis and Clark Expedition http://www.nps.gov/jeff/LewisClark2/CorpsOfDiscovery/Preparing/Medicin...

Contains listings of medicines purchased and information about medical practices of the period.

The Journey Continues: The Bicentennial Commemoration of the Lewis & Clark Expedition at Lewis and Clark College, Jefferson Sends Lewis to Study with Benjamin Rush and Casper Wistar http://www.thejourneycontinues.org/200/021603.html

College site with numerous articles and pictures related to the journey.

To Equip an Expedition, Lewis and Clark: Inside the Corps http://www.pbs.org/lewisandclark/inside/equip.html

Popular site based on PBS Lewis & Clark production.