Operation Bullpen: Be aware of these authenticators and autograph sellers - Sports Collectors Digest

Undercover FBI agent provides tips on how to avoid fake autographs

Autograph Authentication Guide for Your Sports Memorabilia

Operation Bullpen: Unraveling the Sports Memorabilia Forgery Ring

Autographs - News and Notes

Forgery: The bane of the hobby of sports collectors - Sports

Operation Bullpen Author Pens Online Series for SCD On the Craft

Major League Baseball Authentication Program - Wikipedia

The Forgery Problem Still Exists: How You Can Help - Sports

Autograph Sept. 2009 by Autograph Media - Issuu

Book Operation Bullpen Inside Story Biggest Forgery Scam Nelson

Autographs - News and Notes

culogo.jpg

Operation Bullpen: Unraveling the Sports Memorabilia Forgery Ring

Operation Bullpen: The Inside Story of the Biggest

Go Behind the Scenes of MLB Authentication - Sports Collectors Digest