You Wouldn't Want to Explore With Marco Polo!: A Really Long Trip You'd Rather Not Take - Jacqueline Morley, David Salariya, David Antram
Another fun one in this series. I'm finding that the more I read these books, the more I feel that they work best as supplements after having already read some on the topic. I don't recommend them as stand-alones because the information isn't presented in the most concise way. I think of these more as fun side dishes vs. the main course.