Sezon 7
Bölümler
0 Slave Songbook; Josh White Guitar; Birthplace of Hip Hop 23 Şub 2009 1 Psychophone; War Dog Letter; Pancho Villa Watch Fob 22 Haz 2009 2 Manhattan Project Patent; Galleon Shipwreck; Creole Poems 29 Haz 2009 3 St. Valentine's Day Massacre; Booth Letter; Cemetery Alarm 6 Tem 2009 4 Sideshow Babies; Lubin Photos; Navajo Rug 13 Tem 2009 5 Tokyo Rose; Crazy Horse; World War II Diary 20 Tem 2009 6 Amelia Earhart Plane; Fillmore Pardon; Boxcar Home 27 Tem 2009 7 Hindenburg Artifact; John Adams Book; Birthplace of Hip-Hop 10 Ağu 2009 8 Mussolini Dagger; Liberia Letter; N.E.A.R. Device 17 Ağu 2009 9 WPA Mural Studies; George Washington Miniature; Japanese Balloon Bomb 24 Ağu 2009 10 Stalag 17 Portrait; Seadrome; Black Tom Shell 31 Ağu 2009 11 Duke Ellington Plates; Scottsboror Boys Stamp; Civil War Bridge 7 Eyl 2009 12 Shipwreck Cannons; Connecticut Farmhouse; Kahlil Gibran Painting 14 Eyl 2009