overview : What does the Ground Zero flag from 9/11 have in common with the original Wright Brothers flying machine patent? Both are historically important items for the United States… and both are missing. Best-selling author Brad Meltzer enlists America’s help to find these and other missing treasures.

First Air Date : Oct 31, 2014

Last Air Date : Jan 02, 2015

Runtime : 1h 0m

Episodes : 11

Seasons : 1

Genre : Documentary,

Companies : Left/Right

Countries : US

Keywords : artifact, usa history