Sept. 27, 1998: McGwire hits 70 and is saluted as 'the new American sports hero
20 years ago, McGwire blew off 70th HR ball; it sold for $3m
Mark McGwire PSA ProBatFacts℠
JAWS and the 2013 Hall of Fame ballot: Mark McGwire - Sports Illustrated
The Ball: Mark McGwire's 70th Home Run Ball and the Marketing of the American Dream
Mark McGwire's 70th Home Run Ball Now Worth Only $250-400K
Mark McGwire MLB Balls for sale
Aaron Judge's Record-Breaking Home Run Ball Has Hit the Auction Block – Robb Report
What Mark McGwire's 70th HR Ball Is Reportedly Worth Now - The Spun: What's Trending In The Sports World Today
Lot Detail - 1998 Mark McGwire Signed & Game Used ONL Coleman Baseball Home Run #70 With Ticket Stubs (MEARS & JSA)
Mark McGwire's 70th HR Ball Once Sold for $3M and Is Now Valued at $250-$400K, News, Scores, Highlights, Stats, and Rumors
How much is Aaron Judge's 62nd home run ball worth?