History Detectives, Season 7

America's top gumshoes are back. In this episode: a couple in Cincinnati acquire a peculiar phonograph at an antiques auction; a World War II collector from Kansas, has a cryptic letter from a soldier to another military man; and the new owners want to know more about a watch fob commemorating Francisco “Pancho” Villa’s murderous raid on the border town of Columbus, New Mexico.

In this episode, an invention that may have been used in the atomic bomb, a 23-pound block of beeswax with strange markings, and a French manuscript kept by an American family for 160 years.

In this episode, a gun that may have belonged to a member of Al Capone's gang, a letter allegedly written by John Wilkes Booth's father, and a device meant to guard against grave robbers.

In this episode, a child who may have been exhibited in an incubator at the 1933 Chicago World's Fair, an early movie mogul's dramatic rise and fall, and a controversial design woven into a Navajo rug.

In this episode, a recording that may have played a part in the World War II treason trial of Tokyo Rose, a photo ostensibly of Crazy Horse, and the poignant diary of a World War II pilot.

In this episode, a fragment that may been a piece of Amelia Earhart's plane, a letter from President Millard Fillmore commuting the death sentence of a Native American, and a Colorado home whose supports may have been constructed from a railroad boxcar.

In this episode, an instrument that may have been recovered from the Hindenburg, a book that may have been a gift from John Adams to his son, and a home in the Bronx that may have been the birthplace of hip hop.

In this episode, a dagger that may have belonged to dictator Benito Mussolini, letters from a man who may have been part of the post-slavery exodus to Liberia, and a device that could have had something to do with nuclear attack preparedness.

In this episode, mural studies that may have been commissioned by the WPA in the 1930s or 40s, a miniature painting that may depict George Washington, and a balloon scrap that may be a missing piece of a secret weapon.

In this episode, a portrait created in a German prisoner of war camp, the Seadrome, a floating airport anchored to the ocean floor where trans-Atlantic passenger flights could refuel, and an intact artillery shell that may have been part of an attack on the U.S. in WWI.

In this episode, the site where a bridge may have been burned to thwart General Sherman's attempt to cross into Columbia, South Carolina, a penny stamp that may be connected to a landmark civil rights case, and metal sheets that look like printing plates for Billy Strayhorn's "Take the A Train," performed by Duke Ellington.