Portland Sea Dogs happy to be hosting games again - The Boston Globe
Portland Diamond Project (Portland, OR) : r/mlbtheshowstadiums
Column: Another domino falls on road to MLB expansion
What we know (and don't know) about a proposed Portland baseball stadium
MLB expansion: Portland continues to build buzz for baseball around town - The Athletic
Ballpark Concepts Portland Diamond Project
Portland Diamond Project unveils MLB stadium site
MLB expansion: Inside Salt Lake City's push for a team - Deseret News
Proposed Royals ballpark would stretch over I-670 - Ballparks of Baseball - Your Guide to Major League Baseball Stadiums