Possible Clues:

• Baseball's Mel ____
• Superstar of the Polo Grounds
• Fred ___, whose sneeze was the subject of the first copyrighted movie in the U.S.
• Can.'s capital
• Hubbell's teammate
• Member of the 500-home run club
• Cooperstown inductee of '51
• Giants slugger
• His number 4 was retired by the Giants
• Mel of Polo Grounds fame