Mark-McGwire - On - Multiple Results on One Page
Ahead of the Curve: Inside the Baseball Revolution [Book]
Juan Gonzalez 1993 Leaf Series Mint Card #170
1990's Baseball Cards
Mark McGwire Baseball Cards
Mark McGwire Price List - Supercollector Catalog
20 portrait tips told with some of the best baseball card photos
Mark McGwire Price List - Supercollector Catalog
Upper Deck – SABR's Baseball Cards Research Committee
1993 Upper Deck - Future Heroes Baseball - Gallery
Baseball - Mark McGwire Master Set: 262 Runner Set Image Gallery