https://github.com/davepinch/pinchy.cc/blob/master/content/sites/historylink.org/File/5087.snippet-west-of-the-cascades-1-1.md
Emily Elizabeth Dickinson was born at the family’s homestead in Amherst, Massachusetts, on December 10, 1830, into a prominent, but not wealthy, family.
Vashon glacier begins to melt and recede from Puget Sound region and Columbia Basin around 16,900 years ago (historylink.org)