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Photo Researchers, Inc./Science Source.

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AFP/Getty Images.

Zoonar GmbH/Alamy.

Katherine Cronin and Edwin van Leeuwen/Chimfunshi Wildlife Orphanage Trust.

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Augustin Ochsenreiter/South Tyrol Museum of Archaeology.

Eurac/Samadelli/Staschitz/South Tyrol Museum of Archaeology.

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SD Dirk/Wikimedia Commons.

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ZUMA Press, Inc./Alamy.

Jacob Halls/Alamy.

Walt Disney Studios Motion Pictures/Lucasfilm Ltd.

Dennis Hallinan/Alamy.

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Moshe Milner/Israel’s Government Press Office/Flickr.

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Bjorn Svensson/Alamy.

Chris Belsten/Flickr.

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War posters/Alamy.

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Deco Images/Alamy.

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