Mimi inherits a gold mine-the Gold Bug! On summer break, Christina and Grant join their mystery book-writing grandmother and cowboy pilot grandfather, Papa, on an adventure to check out the mine and discover a mystery that could mean boom or bust! 

LOOK what's in this mystery - people, places, history, and more! 
Dahlonega Gold Rush (in Georgia) • California Gold Rush • James Marshall • Forty-Niners • Gold fever • Travel methods • Food • Claims and claim jumping • Price of goods • Gold mining (methods, tools, conditions) (especially panning) • Oregon Trail • Characteristics of and legends about gold • Role of Chinese in rush • Levi Strauss/jeans • Outcomes of journey • Yukon Gold Rush (in Alaska) • Role of women and children • Klondike gold • Golden Stairs on the Chilkoot Trail • Travel methods • White Pass • What happens after the gold rush • Fool's Gold • Vocabulary (tarmac, bank, hangar, controllers, taxi, runway) • Float planes • Gold Rush Museum, Dahlonega, GA • Alexander's restaurant, Bellingham, WA • Chinatown - Golden Dragon restaurant - Levi Strauss Company, San Francisco, CA • Space Needle and Klondike Gold Rush National Historical Park, Seattle, WA.