Lewis and Clark Foundation
http://www.lewisandclarkfoundation.org
Lewis and Clark Trail Heritage Foundation
http://www.lewisandclark.org
Lewis and Clark Interpretive Center, Great Falls, MT
www.fs.usda.gov/main/lcnf/learning
Fort Clatsop National Historic Park
www.nps.gov/lewi/planyourvisit/fortclatsop.htm
 Fort Mandan Foundation
http://www.fortmandan.com
Travelers Rest Preservation & Heritage Assn
www.travelersrest.org
Pompeys Pillar Historical Society
www.pompeyspillar.org
Ron Ukrainetz, artist
www.ronukrainetz.com
J & P Publications
http://www.lewisandclarkbooks.com
Lewis and Clark National Historic Trail
http://www.nps.gov/lecl