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Magic mud" used by every Major League Baseball team is harvested in southern New Jersey - 6abc Philadelphia
Major League Baseball rubs its balls in Jersey mud
New Jersey man making mud that helps pitchers throw the heat - 6abc Philadelphia
Famed N.J. mud used to rub up baseballs could be on the way out, MLB insider reports - nj.com
Harvesting baseball's 'magic mud' - CNN.com
MLB standardizes ball "muddying" process
AlaBCA on Twitter: "#FridayFacts: Every single MLB baseball is rubbed in Lena Blackburne Baseball Rubbing Mud, a unique “very fine” mud only found in a secret location near Palmyra, New Jersey. https://t.co/x5es3zdOtb" /
Pro Pitchers' Dirty Secret Rubbed On Every Ball : NPR
How the Red Sox muddy-up baseballs for game use at Fenway – Boston Herald
Baseball Rubbing Mud: Baseball Rubbing Mud: Professional Size
How the Red Sox muddy-up baseballs for game use at Fenway – Boston Herald
He's Baseball's Only Mud Supplier. It's a Job He May Soon Lose. - The New York Times
Grounds crew 'muds' more than 3,000 baseball for CWS play | NCAA.com
6 PACK OF LENA BLACKBURNE "original BASEBALL rubbing MUD" serving MLB SINCE 1939 | eBay
Lena Blackburne rubbing mud a secret of the game | Baseball Hall of Fame
Lena Blackburne rubbing mud only foreign substance MLB allows doctor baseballs
The end of rubbing mud? MLB experiments with new baseballs - DRaysBay
MLB To Require 'Muddy' Ball' Technique
Memo - MLB to require all teams to 'muddy' ball using exact same technique - ESPN
February 10, 1920 Lena Blackburne's Famous Baseball Rubbing Mud – Today in History
Baseball Has a Dirty Little Secret: Lena Blackburne Rubbing Mud
Jim Garrett of the Arizona Diamonbacks will rub mud into more than 100 baseballs before Sydney game to continue a 75-year-old tradition | The Courier Mail
MLB leans on longtime mud supplier, not Rawlings, to coat balls - Sports Illustrated
Worcester Red Sox Lena Blackburne baseball rubbing mud Polar Park
The end of rubbing mud? MLB experiments with new baseballs - DRaysBay
Baseball-'Best ball in the world' gets mud bath, gloved treatment | Reuters