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Last updated 7/31/2022
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This Week In Pennsylvania Archaeology – Discover the Monongahela Culture Archaeology of Southwestern, Pennsylvania
Wikipedia – Monongahela Culture
The Mystery of the Monongahela Indians
Pennsylvania Heritage – Mystery of the Monongahela Culture
Added 3/24/2022, last updated 7/31/2022 *
* older dates may be inaccurate due to tech changes along the way
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