Wikipedia:Articles for deletion/1925 San Francisco Seals season
This book gives a few pages to the season - https://books.google.com/books?id=BWRNtf-_PEkC&pg=PA333&lpg=PA333&dq=1925+san+francisco+seals&source=bl&ots=6a2ugTUfb8&sig=ACfU3U1UYWdqrHwjEOEaV3DsrNhGMd277g&hl=en&ppis=_c&sa=X&ved=2ahUKEwixwN_vh9fnAhUEeKwKHQeMCTo4ChDoATAJegQIChAB#v=onepage&q=1925%20san%20francisco%20seals&f=false.  The season is also discussed in https://books.google.com/books?id=m55qm2q8sM0C&pg=PT75&lpg=PT75&dq=1925+san+francisco+seals&source=bl&ots=dl9h4K_DIg&sig=ACfU3U2_AeLVBqVVhNk5S17dxa4247izJg&hl=en&ppis=_c&sa=X&ved=2ahUKEwjovu2iiNfnAhUHLK0KHYDuCSE4FBDoATACegQICRAB#v=onepage&q=1925%20san%20francisco%20seals&f=false.  As Cbl62 pointed out, at this time the PCL was considered to be the premier league in the western US, and the '25 Seals won the pennant of this league, so this season likely passes 
— User:Hog, 21:59, 16 February 2020 (UTC)
Stance: keep
Cited policy: WP:NSEASONS (Wikipedia:Notability)