5x2 - Continental Currency; Short-Snorter; Liberty Bell Pin

July 2, 2007

A possible Colonial-era bill found by a Nebraska family; and a British 10-shilling note said to have been signed by FDR, Winston Churchill and George Patton. Also: A North Carolina woman has a pin she claims was made from metal taken from the Liberty Bell.

5x3 - GAR Photograph; Jefferson Pledge; Dempsey Fight Bell

July 9, 2007

A fight bell that may have been used in a Jack Dempsey boxing match; a photo that may depict white Civil War soldiers standing with two black men, all of whom are thought to be members of the Grand Army of the Republic. Also: a document that may have Thomas Jefferson's signature on it, along with a pledge that would help finance a school.

5x4 - Atocha Spanish Silver; Ernie Pyle's Typewriter; Lucy Parsons Book

July 16, 2007

Two bars of silver that may have been from a Spanish ship that went down off Florida; a book that might have belonged to social activist Lucy Parsons; a typewriter that may have belonged to WWII journalist Ernie Pyle.

5x5 - Great Mexican War Posters; Muhlenberg Robe; Nora Holt Autograph Book

July 23, 2007

Movie posters for a film that might contain footage of fighting during the Mexican Revolution; and an autograph book that may have signatures from Warren G. Harding and Calvin Coolidge. Also: a robe that might have belonged to Gen. Peter Muhlenberg, who led troops during the American Revolution.

5x6 - NC-4: First Across the Atlantic; Howard Hughes Crash; Civil War Balloon

July 30, 2007

A square of fabric that may have been part of an NC-4 aircraft, which was the first to fly across the Atlantic; and an altimeter that might have been part of the XF-11 aircraft flown by Howard Hughes in 1946. Also: a piece of material that may have been part of a Civil War-era hot-air balloon designed for the U.S. Army.

5x7 - Grace Kelly Car; Harley-Davidson Motorcycle; Civil War POW Photos

August 6, 2007

5x8 - Coca-Cola Trade Card; Lawrence Strike; Vicksburg Map

August 13, 2007

5x9 - Red Cloud Letter; '32 Ford Roadster; Cast Iron Eagle

August 20, 2007

A 1932 Ford Roadster that may have been used in dry-lake races; a letter that may have been written by Mount Rushmore sculptor Gutzon Borglum to James Red Cloud of the Lakota tribe; a cast-iron eagle that might have been a decoration for a New York post office

5x10 - Lincoln Letter; Quaker Map; U.S.S. Indianapolis

August 27, 2007

A letter that may have been signed by Abraham Lincoln; a map that might have markings for the Underground Railroad in Ohio; and artifacts that may have been aboard the USS Indianapolis when the ship was sunk by a Japanese sub during WWII.

5x11 - Bill Pickett Saddle; Hitler Films; McKinley Casket Flag

September 3, 2007

A saddle that may have been owned by cowboy legend Bill Pickett; a flag that might have been draped over the casket of President William McKinley; and film cans that may contain archival footage of Nazi officials.

5x12 - USS Thresher; Pete Gray Cartoon; Manhattan Project Letter

September 10, 2007

The fifth season ends with documents that may be related to the USS Thresher, a nuclear sub that sank in 1963; storyboards that may be for a comic strip about one-armed baseball player Pete Gray; and handwritten documents that may pertain to the Manhattan Project during World War II.