In the 20th century alone, there have been 1,600 books about the circus.
My adding one more would be superfluous unless I do something totally new and different.
—Gary Jennings
Which of these books informed this advent calendar?
The secret is revealed!
Major Milestones
Roots
1700s
1800s
1900s
2000s
Grand Glossary
Remarkable Resources
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Yesterday
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