List of Major League Baseball records considered unbreakable
Cal Ripken Jr. Academy of Achievement
Cal Ripken Jr. Academy of Achievement
Cal Ripken Jr.'s Iron Man record isn't unbreakable, and here's why
Cal Ripken Jr. Set Unbreakable MLB Records, But Where is The Iron
Cal Ripken Jr. Academy of Achievement
Cal Ripken Jr. broke baseball's Iron Man record 25 years ago
Cal Ripken looks back on streak - SI Kids: Sports News for Kids
Cal Ripken Jr. Set Unbreakable MLB Records, But Where is The Iron
What MLB Records Will Never Be Broken?
Charitybuzz: Rare Cal Ripken Signed 1982 Rookie Card, Mint 10
Cal Ripken Jr.: Iron Man