Baseball cap history and timeline
MLB Preview: Yankees, Red Sox and other MLB uniform tweaks - Sports Illustrated
New Blue Jays batting practice cap just as horrible as expected - Bluebird Banter
New Era Cap - Get ready. The 2019 MLB Spring Training caps are here. Shop your team at newer.ac/mlbspringtraining
Detroit Tigers - Wikipedia
New York Yankees - Wikipedia
MLB spring training: New Era unveils new logo-within-logo caps - Chicago Sun-Times
Men's Atlanta Braves New Era Navy 2022 Spring Training 39THIRTY Flex Hat
Chicago White Sox 3B Gets Nasty Sunburn on Head, Criticizes New Hats