Tunnels of Treachery: Moose Jaw Time Travel Adventure #3 by Mary Harelkin Bishop

When their friends suddenly fall into the tunnels below Moose Jaw – Andrea and her brother Tony have no choice but to travel back in time to the 1920s to rescue them. They soon discover that Chinese immigrants are forced to work in terrible conidtions before they can pay the government-imposed Chinese Head Tax. Are their friends among those forced labourers? Can they find them and get safely home? Updated & republished, with 12 illustrations & additional resources. C. 2022, 978-1-927570-69-2; 240 pgs, Ages 9 to Adult, Juvenile historical fiction,