Wikimedia
Wikipedia: Indigenous Peoples of the Americas
Looks at migration theories proposed in regard to the early peopling of the Americas, European colonization, early agriculture and culture. Also looks at contemporary indigenous groups, then groups within each country in the Americas.
Khan Academy
Khan Academy: Transformation Masks
Northwest Coast transformation masks manifest transformation, usually an animal changing into a mythical being or one animal becoming another. View pictures and read the history behind the masks and how they are related to myths.