The most expensive sports memorabilia and collectibles in history - ESPN
List of most expensive sports cards - Wikipedia
Auction House Sells Michael Jordan Card For $2.1 Million
Michael Jordan Cards: The Most Expensive of All Time
High Rollers 132: The 10 Most Likely 2023 NBA Finals MVPs and Their Alltime Record Card Sales
Rare Honus Wagner Pittsburgh Pirates baseball card sells for record $7.25 million
Sports Cards Are the Next Big Investment, Says Kevin Durant & Logan Paul - Bloomberg
Card of Pittsburgh Pirates great Honus Wagner sells for record $1.4 million - ESPN
How Ken Goldin Lost MILLIONS Selling his Honus Wagner