Bridge of Time

Bridge of Time
By Lewis Buzbee

This is a fun time travel story, mostly because it's set right here in San Francisco!
Middle schoolers Lee Jones and Joan Lee are best friends, and both have just heard that their parents are planning to divorce...the next morning, while on a boring school field trip to Fort Point, they are suddenly transported back in time to 1864. And who do they run into? Mark Twain (who introduces himself as Sam Clemens).
They have many crazy adventures while learning some unpleasant history lessons, especially with regard to how Chinese immigrants were first treated in San Francisco. And they travel to some other time periods in the City, too, including the future.