Among those invited to participate in the 2008 National Book Festival is Joseph Bruchac. He will be in the "Teens and Children Pavilion" from 11:10 to 11:45 AM, and sign books from 12:30 to 1:30 on Saturday, September 27th.
Last year, two Native writers were there: Cynthia Leitich Smith, and N. Scott Momaday. View the webcast of her talk here and his here.
Note (Sept. 12, 2008):
I neglected to say that the National Book Festival takes place in Washington DC at the National Mall. Here's a link to the homepage for the festival.
Also! there's a "toolkit" for each author. Bruchac's materials include an interview that starts out with this question: "What sparked your imagination for your newest book, March Toward the Thunder?" Click here to get to that page.