This shows some of the evolutionary stages of the baseball, starting with a
regulation ball from the Massachusetts Game.  Next is an 1860 regulation ball.  
By 1872, the rules called for a ball with the general construction, weight and
dimensions of the ball we use today, though it was not wound as tightly and
later referred to as the 'deadball'.  The modern baseball in front is one I 'just
happened to have in my pocket' when I had the chance to meet our favorite
fielder, Rusty Greer.  I asked if he would make it out to my wife, Martha who is
an even bigger fan of his than I am!    
 
Evolution of the Base Ball