New Era Fitted Yale Baseball Cap - Blue. Officially Licensed Yale University Baseball Cap. Fitted baseball cap Made by New Era, the supplier of on-field caps to Major League Baseball and the Originators of True Fitted(R). This is the authentic 59Fifty shape. Blue wool cap with the white Yale "Y" on the front and the Yale Bulldog on the center-back of the cap. DelMonico Hatter, Est 1908 is based in New Haven Connecticut, the home of Yale University.