Seven Keys to Baldpateby Earl Derr Biggers Earl Derr Biggers was an American novelist best known for the detective Charlie Chan series and the novel Seven Keys to Baldpate. Pages of Seven Keys to Baldpate : Page 1Page 2Page 3Page 4Page 5Page 6Page 7Page 8Page 9Page 10Page 11Page 12Page 13Page 14Page 15Page 16Page 17Page 18Page 19Page 20Page 21