CNN Hero Chad Pregracke has spent the past two years digging up U.S. history . Over that period , he has collected 64 messages in bottles . Usually they 're more intimate . He 's found lottery tickets , sheet music , people 's letters and even voodoo in the past . Do you know a hero ? Nominations are open for 2013 CNN Heroes .
CNN Hero Chad Pregracke has spent the past two years digging up U.S. history . Over that period , he has collected 64 messages in bottles . He 's found lottery tickets , sheet music , people 's letters and even voodoo in the past . Do you know a hero ? Nominations are open for 2013 CNN Heroes .