Reports of explorations and surveys, to ascertain the most practicable and economical route for a railroad from the Mississippi River to the Pacific Ocean, volume 12, page 200.
https://github.com/davepinch/pinchy.cc/blob/master/content/topics/places/regions/north-america/palouse/source/source-of-the-peluse.md
https://ia802705.us.archive.org/BookReader/BookReaderImages.php?zip=/20/items/reportsofexplora121unit/reportsofexplora121unit_jp2.zip&file=reportsofexplora121unit_jp2/reportsofexplora121unit_0327.jp2&id=reportsofexplora121unit&scale=1&rotate=90
