WA Pioneer Pursuit Index
The Washington State Genealogical Society has compiled an alphabetic list of individuals "deemed to have lived in Washington Territory on or before November 11, 1889". The Washington Pioneer Pursuit Index can be found here: https://wasgs.org/cpage.php?pt=110
Clicking on the last name of a pioneer listed, navigates to a family history of that individual and some of their descendants. A reference section includes links to original sources used. Note: Some of the links may require a paid subscription to the website (i.e., Ancestry or GenealogyBank). However, the information given still provides valuable clues to possibly find the same or similar document elsewhere for free.
If you have documented an individual living in Washington Territory on or before November 11, 1889, that is not in the index, you may submit them for inclusion. Follow the instructions found here: https://wasgs.org/cpage.php?pt=100