Sources: Pirates P to Become Primary Logo in 2014 – SportsLogos
Pittsburgh Pirates Primary Logo History
Pirates Release New Uniform, Tease A Second – SportsLogos.Net News
Pittsburgh Pirates Logos - National League (NL) - Chris Creamer's
Pittsburgh Pirates Logos - National League (NL) - Chris Creamer's
Pittsburgh Pirates Logos - National League (NL) - Chris Creamer's
Pirates Release New Uniform, Tease A Second – SportsLogos.Net News
SportsLogos.Net News – News and blog on new sports logos and
Pittsburgh Pirates Pittsburgh pirates, Mlb baseball logo
pittsburgh pirates – SportsLogos.Net News
Uniforms worn by - Chris Creamer's Sports Logos Page