16. The Supporters Shield and the Cascadia Cup 25 Stories That Made MLS

How the supporter culture and following of MLS teams led to the creation of one of the three main trophies & the eventual expansion into 3 new teams.

Sources: 

A History of the Supporters Shield by Ryan Gates for Stumptown Footy
https://www.stumptownfooty.com/2011/2/15/1995978/a-history-of-the-supporters-shield


A Pacific Passion Play by Grant Wahl for SI
https://www.si.com/vault/2011/05/23/106070650/a-pacific-passion-play


https://web.archive.org/web/20071012230838/http://seattletimes.nwsource.com/html/soccer/2003941033_sounders11.html


https://www.sounderatheart.com/2019/8/15/20805034/sounders-new-ownership-changes-faq


https://www.theglobeandmail.com/sports/soccer/whitecaps-invisible-owner-casts-large-shadow/article573189/


https://www.cbc.ca/sports/soccer/mls-expected-to-announce-vancouver-expansion-team-1.821469


https://www.timbers.com/post/2007/05/22/timbers-introduce-new-owner-merritt-paulson-0