Book excerpt: Prolific storyteller Jane Yolen marks the 400th anniversary of the Mayflower's arrival by channeling the voice of Plymouth Rock itself. A funny (and fact-checked!) look at a historical monument. The history of Plymouth Rock is explained--by the rock itself. Playful, clever verses offer a comprehensive window into the events leading up to the 1620 landing and beyond, dispelling common misconceptions along the way. Alternating with Rock's poems is a witty analysis of the truthfulness of its statements, told in the voice of the Fact Checker. Truly a book for today's savvy media consumers.