Secret Agents Jack and Max Stalwart: Book 4: The Race for Gold Rush Treasure: California, USA, , Running Press, Elizabeth Singer Hunt,Children’s / Teenage fiction: General, modern and contemporary fiction,Children’s / Teenage fiction and true stories, USA;alifornia;Gold Rush;Sierra Nevada;Sierras;mountains;gold;United States;treasure;buried treasure;secret treasure;Secret Agents Jack and Max Stalwart;Jack Stalwart;spy;secret agent;action;adventure;detective;mystery;brothers,, The Secret Agents Jack and Max Stalwart Series, United States, en-UShttps://www.hachettebookgroup.comUSA;alifornia;Gold Rush;Sierra Nevada;Sierras;mountains;gold;United States;treasure;buried treasure;secret treasure;Secret Agents Jack and Max Stalwart;Jack Stalwart;spy;secret agent;action;adventure;detective;mystery;brothers, [BLURB],[CITY],New York,books, ebooks, biblet, Book2look