Blackburne, Lena, 1886-1968

"Russell Aubrey "Lena" Blackburne (October 23, 1886 – February 29, 1968) was an American baseball infielder, manager, coach, and scout in Major League Baseball (MLB)...Blackburne made an unusual and valuable contribution to baseball when he discovered a special use for the clay from the Delaware River to take the shine off of baseballs before each game. At the time, the mid-1930s, baseball teams used a variety of substances to rub baseballs: tobacco juice, shoe polish, dirt from the baseball field or a combination, but nothing they tried gave the balls the right look or feel. Blackburne searched for the perfect rubbing compound until one day, he found a mud that he liked close to home. The actual location has never been revealed, but rumor says it was from a tributary of the Delaware River, near Palmyra, New Jersey where he lived most of his life. He marketed his idea, and by 1938, he was supplying the mud to all American League teams; because Blackburne was a diehard American League fan, he refused to sell the mud to National League teams until the mid-1950s. Since then, every major and minor league team has used only his product. The mud is still collected today, from a new secret location."--Wikipedia