Book excerpt: Tom Edison doesn't want his family to leave Yonkers, NY after his father loses his job. But it looks like Wichita will be his new home in two weeks no matter what. Tom won't go without a fight though--especially after he discovers a clue to a centuries-old family secret. His famous namesake, Thomas Edison, had discovered the secret formula for changing metal into gold. Now on a desperate search for the key to this monumental scientific discovery, Tom and his friends will have to rely on each other to unlock this mystery and keep Tom's family from moving. Full of gadgetry, historical rivalries, secret societies, and bad guys galore, Geoff Watson's EDISON'S GOLD is a thrilling adventure for middle-grade readers.