The Evolution of the Baseball From the Dead-Ball Era Through Today

Baseball Ball - Evolution of the Iconic Sphere - 99 Baseballs

How We Got Here. 19th century baseball and why it…, by John Thorn

Dead-ball era - Wikipedia

Which MLB era is the greatest? The 1950's or 1990's? - Sports Illustrated Vault

Baseball's Official Historian Explains The Origins Of Our National Pastime : NPR

The evolution of baseball gloves : r/interestingasfuck

Baseball has changed drastically since 1908

The Rise and Fall of the Deadball Era – Society for American Baseball Research

The game stays the same even as baseballs change