Matches in DBpedia 2014 for { ?s ?p John J. Mahon was a politician and professional baseball executive. He served as president and principal owner of the Baltimore Orioles of the American League in 1902. He was also a notable political boss in Baltimore, Maryland, affiliated with the Democratic Party.. }
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- John_Mahon_(baseball) abstract "John J. Mahon was a politician and professional baseball executive. He served as president and principal owner of the Baltimore Orioles of the American League in 1902. He was also a notable political boss in Baltimore, Maryland, affiliated with the Democratic Party.".
- John_Mahon_(baseball) comment "John J. Mahon was a politician and professional baseball executive. He served as president and principal owner of the Baltimore Orioles of the American League in 1902. He was also a notable political boss in Baltimore, Maryland, affiliated with the Democratic Party.".