STEVE INSKEEP, HOST: NPR News is celebrating 250 years since the founders signed the Declaration of Independence. We've been exploring culture, history and objects from those 250 years. And for the latest entry in our series America In Pursuit, we pursue a presidential treasure, once lost, now found. Here's NPR's Andrew Limbong. ANDREW LIMBONG, BYLINE: In true American fashion, I want to tell you about a gun, a pistol that was near and dear to George Washington's heart until he lost it.