This is a series of children’s nonfiction books about different aspects of Native American culture.
The series was written by Karen Liptak. Most of them are available online through Internet Archive.
Books in the Series:

North American Indian Sign Language (1990)
North American Indian Survival Skills (1990)
North American Indian Medicine People (1990)
Indians of the Pacific Northwest (1991)
Indians of the Southwest (1991)
North American Indian Tribal Chiefs (1992)
North American Indian Ceremonies (1992)