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Past and Present Courses of Monongahela and Youghiogheny Rivers, 1911 Graphic

Past and Present Courses of Monongahela and Youghiogheny Rivers, 1911 Graphic

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Past and Present Courses of Monongahela and Youghiogheny Rivers, 1911

Curated by ACT

A map from 1911 showing the present and pre-Pleistocene courses of Monongahela (left) and Youghiogheny rivers.

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historical map of pennsylvania

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Resource Details

Grade

9th - 10th

Subjects

Resource Type

Graphics & Images

Audiences

For Administrator Use

2 more...

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