We have included a sample of the plants catalogued by Lewis and Clark in the Fort Clatsop region. The textual descriptions of the plants were taken from "PLANTS OF FORT CLATSOP From the Journals of Lewis and Clark", a publication of the Fort Clatsop Historical Association, Copyright © 1989.

The hand-drawn illustration of Oregon Grape was provided by John Haugse of Animakers Studio.

The campsite and trail locations were placed approximately where indicated on a map presented in "Seeking Western Waters", by Emery and Ruth Strong, Copyright © 1995, Oregon Historical Society.

The journal entries used here were downloaded from those posted at the website of the American Studies Department of the University of Virginia.