Thanksgiving is... A holiday for gratitude.  It is turkey, cranberry sauce, and pumpkin pie.  It is a time to celebrate and share with family and friends. Explaining the roots of our familiar fall holiday in ancient harvest celebrations, Gail Gibbons' clear, kid-friendly language is accompanied by colorful watercolor illustrations.  The story of the Pilgrims' journey and first Thanksgiving feast is retold, as well as the history of Thanksgiving as a national holiday, and the traditions and celebrations that have developed over the years.   Thanksgiving Is. . .  is a perfect introduction to early American history, and a fun autumn holiday from a children's nonfiction master.