Did you know that Vin Scully called the radio for Hank Aaron's 715th home run? I didn't either until I saw this on Reddit. Listen to the master:

The best part is the decision Scully makes immediately after the home run call. And everything else.

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 video
XII: Babe Ruth in Just Pals
XIII: Stories of the Base Ball Field
XIV: Babe Ruth swing analysis
XV: Bob Feller mechanical analysis