Book excerpt: In eight chapters covering everything from “Yosemite’s Rich Past” to “Endless Things to See and Do,” Mike Graf calls on the park’s most knowledgeable insiders — biologists, rangers, even the park’s resident entertainer — to share their most exciting stories and best advice. Colorful photos and illustrations enable young readers to get up close and personal with Yosemite’s waterfalls, Giant Sequoia trees, sheer granite walls, and, of course, those famous black bears. This guide also recommends gear for a national park visit and offers safety tips, a wildlife observation how-to and birding guide, tips on managing a wildlife encounter, and a guide to rock climber lingo and a difficulty ratings system. Also featured are detailed accounts of famous climbs, tips on how to protect the park and keep it green, an historical timeline, and a list of popular hikes.