Chapter VIII: Brooks--First across the Continent

Dye--_The Conquest_.

Holland--_Historic Adventures_, 21-58.

_Journal of American History_, I:468 (1907).

Laut--_Pathfinders of the West_.

Lewis and Clark--_Journals_.

Schultz--_Bird Woman_ (written by a man adopted by the Blackfeet Indians, from accounts given him by friends of Sacajawea).