Take a closer look at what pine tar is, the historical origins of MLB’s pine tar rules, and a series of infamous baseball incidents involving the sticky, brown stuff.
July 24, 1983: The Pine Tar Game – Society for American Baseball Research
Pine tar and The Police: New York's stadiums part of pop culture lore
From Pine Tree to Pine Tar (and a bit about baseball)
Interview: Filip Bondy, Author Of 'The Pine Tar Game' : NPR
Pine-Tar Incident: The Untold Story - WSJ
Tar for the course: Yankees pitcher Michael Pineda busted for using foreign substance, MLB
Why do baseball players use pine tar?
A Helmet So Dirty Even the Logo Wants Off – SportsLogos.Net News
The History of Pine Tar in Baseball
George Brett's pine tar home run
Pine tar and The Police: New York's stadiums part of pop culture lore
The Pine Tar Incident: Brett v. McClelland - July 24, 1983
Interview: Filip Bondy, Author Of 'The Pine Tar Game' : NPR