You can start your research searching the phrase "native american*" to find books about Native American artistis broadly, but the official Library of Congress subject heading is "Indians of North America." I recommend you search using both phrases, using quotation marks to ensure the systems searches by phrase.
Here are some samples of Library of Congress subject headings to keep in mind:
When you find a relevants book in the library catalog, examine the subject headings in the full record to find additional keywords to search.