![A map of Lewis and Clark's track, across the western portion of North America from the Mississippi to the Pacific Ocean : by order of the executive of the United States in A map of Lewis and Clark's track, across the western portion of North America from the Mississippi to the Pacific Ocean : by order of the executive of the United States in](http://tile.loc.gov/image-services/iiif/service:gmd:gmd412:g4126:g4126s:ct000028/full/pct:25/0/default.jpg)
A map of Lewis and Clark's track, across the western portion of North America from the Mississippi to the Pacific Ocean : by order of the executive of the United States in
![The Lewis and Clark Expedition Began in Pittsburgh. And Soon the Historic Trail Might, Too. - The Allegheny Front The Lewis and Clark Expedition Began in Pittsburgh. And Soon the Historic Trail Might, Too. - The Allegheny Front](https://www.alleghenyfront.org/wp-content/uploads/2018/05/lewisandclark.jpg)
The Lewis and Clark Expedition Began in Pittsburgh. And Soon the Historic Trail Might, Too. - The Allegheny Front
![The Lewis and Clark Expedition Began in Pittsburgh. And Soon the Historic Trail Might, Too. - The Allegheny Front The Lewis and Clark Expedition Began in Pittsburgh. And Soon the Historic Trail Might, Too. - The Allegheny Front](https://i0.wp.com/www.alleghenyfront.org/wp-content/uploads/2018/05/Screen-Shot-2018-05-18-at-2.06.48-PM.png?resize=1200%2C768&ssl=1)