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See photos from 100 years ago alongside photos of the same spot from today. You can contribute, too! https://commons.wikimedia.org/wiki/Commons:Photo_challenge/2015_-_September-October_-_100_years_later 

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See photos from 100 years ago alongside photos of the same spot from today on this cool Wikimedia Commons challenge. You can contribute, too! https://commons.wikimedia.org/wiki/Commons:Photo_challenge/2015_-_September-October_-_100_years_later