Play Ball! The Rise of Baseball as America’s Pastime Episode 9, The Development of Baseball's Rules Episode 9, The Development of Baseball's Rules.

Streaming video - 2019

Here, Mr. Markusen helps you make sense of the litany of rule changes that took place in the 75 years between 1845 (when the Knickerbocker Club of New York City framed the first written rules) and 1920 (when it became customary to replace the baseball on a regular basis).