You might think of the Pacific Coast League as a lesser form of baseball. A "minor" league, if you will. But it used to be the center of the California baseball world, and here's a parade through Oakland in 1918 to prove it:

Previous Internet Christmases:
I: 1930 Spalding Base Ball Guide
II: Negro Leagues Database
III: Bob Gibson video
IV: John McGraw's Scientific Baseball
V: NBC Archive, featuring Bud Selig
VI: 1888's Base-ball: How to Become a Player
VII: Connie Mack's How To Play Base-Ball
VIII: Life Magazine's greatest baseball photos
IX: Branch Rickey's scouting report on Don Drysdale
X: 100,000+ crowd for White Autos game
XI: Thomas Edison baseball video
XII: Babe Ruth in Just Pals
XIII: Stories of the Base Ball Field
XIV: Babe Ruth swing analysis
XV: Bob Feller mechanical analysis
XVI: Vin Scully calling Hank Aaron's 715th home run
XVII: 1934 Tigers/Yankees Radio Broadcast
XIX: Bob Feller's fastball racing a motorcycle
XX: PCL Promo video from 1946