A week ago, the Guadalupe River in Texas overflowed its banks and swept away dozens of campers. It turns out that this is not the first time it's done so - and not the first time some of those campers didn't survive.

Videos:

• "Rescue 911" segment on the tragedy

• Señor Onion’s Archives: Guadalupe Flood of 1987

• Sheriff recounts tragic Comfort, TX flood

• The Flood: Who Will Save Our Children?

Articles and books:

• Toll At 8 In Texas Flooding 2 Young Campers Are Still Missing

• Almost 40 years ago, 10 children died in a Comfort flood that shook Texas