For the following books: "On This Spot: An Expedition Back Through Time" by Susan Goodman; "Planet Earth/Inside Out" by Gail Gibbons, "Earthquakes" by Franklyn M. Branley, "Let's Go Rock Collecting" by Roma Gans, "A Rock Is Lively" by Dianna Hutts Aston, "Rocks! Rocks! Rocks!" by Nancy Elizabeth Wallace, "Digging Up Dinosaurs" by Aliki, "Barnum's Bones" by Tracey Fern, and "Boy Were We Wrong About Dinosaurs!" by Kathleen V. Kudlinski