Items include a shotgun believed to have been used by a member of Al Capone's gang during the St. Valentine's Day Massacre; a threatening letter to President Andrew Jackson believed to have been written by John Wilkes Boothe's father; and an alarm which is thought to have been an alarm against grave robbers in a cemetery.

Items look at include six paintings by Thelma Johnson Streat, which may have been mural studies commissioned by the WPA in the 1930s or '40s; a 1790 miniature color portrait of a "G. Washington" which was found stored above a Manhattan tavern in a box of documents; and a scrap of material believed to have come from a Japanese balloon bomb used during WWII.

A man from New Jersey claims to have the instrument panel from the Hindenburg in his possession, in which his family lore claims it came from the blimps 1937 crash site. Then, an 18th-century book titled "Trials of Patriots," may contain John Adams signature and an inscription to his son, Charles. And a search is on at 1520 Sedgwick Avenue in the Bronx to see, as legend has it, the origins of hip-hop music.

Arthur Szyk's Earliest Cartoons Professor Lowe's Hot Air Balloon Chemical Warfare Map

Items explored include a recording believed to be from the trial of Iva Toguri, better known Tokyo Rose, the Japanese American woman who made propaganda broadcasts for the Japanese during WWII; a possible photograph of the legendary Crazy Horse, the Lakota warrior. Also, a diary written by a pilot during WWII who perished in action is returned to his family.

Rummaging through a box of shells and bullets at a Colorado gun show, a History Detectives fan discovered a World War I vintage cartridge with a curious etching: Leo V. Thompson, CO E 31st Inf., A.E.F. Siberia. Our contributor bought a spear, or pike, from an antique shop in Chagrin Falls, Ohio. He knows abolitionist John Brown lived near Chagrin Falls and wonders if rebels used this blade in John Brown’s famous raid at Harpers Ferry, VA. Have we found the original costume that launched Ronald McDonald? The label credits a well-known costume designer, and the costume looks similar to the suit we see in an early Ronald McDonald commercial: the yellow balloon coverall, red and white striped shirt and long stockings, and red oversized shoes.

A Honolulu flight mechanic's grandson believes he possesses a piece of Amelia Earhart's airplane but needs help identifying it. Next, the 1851 presidential commutation of a death sentence to life in prison in the case of See See Sah Mah, a Native American who was charged with murdering a a St. Louis trader. Lastly, a home in Colorado which is believed to have been built solely from railroad boxcars.

A camera may have been used to photograph President Truman; Civil War doll may have been used to smuggle medicine; a 15th-century map shows how Europe colonized Florida.

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Lost Gold Ship The Place: Alaska Environmentalist Gabriel Scott was working in the Copper River Delta near Cordova, Alaska, when he came across the wreckage of an old ship. According to locals, these are the remains of the SS Portland, the famous steamship that carried 68 miners and nearly two tons of gold from the Klondike River to Seattle harbor and began the great Klondike Gold Rush of 1897. The History Detectives team mixes maritime history and forensic science to reveal the dramatic story of the SS Portland and confirm that the remains are of this legendary ship. John Hunt Morgan Saddle The Place: Paris, Kentucky A Kentucky man owns a beautifully preserved, Western-style saddle, believed to have been used by Confederate General John Hunt Morgan on his audacious raid into Kentucky, Indiana and Ohio in July 1863. History Detective Wes Cowan has a surprising personal connection to the case - his great-grandfather was actually one of ""Morgan's Raiders"" and was captured alongsi

Season 7 begins with a closer look at the "Psycho-Phone," a device presumed to have been built by Thomas Edison and was designed to communicate with the dead. Then, a WWII letter between two soldiers which talks about a third man's qualifications to become a dog trainer. Lastly, a watch fob which commemorates Pancho Villa's infamous raid on Columbus, New Mexico in 1916.

Face Artifact The Place: Mantoloking, New Jersey Found on the beach, a pebble in the sand with sculpted human features. To unlock this riddle, the team must travel through time, across borders and between cultures. Fire Station The Place: Morristown, New Jersey The evidence suggests that President Ulysses S. Grant celebrated America's centennial at this old firehouse. The History Detectives try to prove it. "Pop" Lloyd's Baseball Field The Place: Atlantic City, New Jersey Black ball players, white politicians, prejudice and patrimony. All of these threads appear when the History Detectives begin to unravel the origins of a historic memorial to black ballplayer John Henry Lloyd.

Bonnie & Clyde The Place: Brodhead, Wisconsin Did these five .45 caliber bullets end one of the most infamous crime sprees in American history? The History Detectives try to link these bullets to Bonnie and Clyde using ballistics tests and some old-fashioned research. Al Ringling Theater The Place: Baraboo, Wisconsin Was this one of the country's first great movie palaces? The History Detectives set out to discover why such an ornate theater was erected and survived in such an obscure location. Sears Home The Place: Akron, Ohio The History Detectives investigate whether or not Sears & Roebuck could have built this home during the industrial boom. Does this couple live in a relic from years gone by?

Morgan Whaling Ship The Place: Mystic, Connecticut Did this Charles W. Morgan whaling ship smuggle slaves out of the south as part of the Underground Railroad? The History Detectives are called in to find out. Witch's House? The Place: Essex County, Massachusetts Did Martha Carrier, who was hanged as a witch, once own Benjamin Abbot's house? The History Detectives must rely on historical research, Martha's descendents and even experts from around the world to solve the case. 1909 Jigsaw Puzzle The Place: Worcester, Massachusetts A quirky jigsaw puzzle of women playing football in the 1800s puzzles the History Detectives. A jigsaw expert, sport historian, magazine collector and antiquities society help solve the riddle.

Portrait of George Washington The Place: Frederick, Maryland Is this an authentic portrait of the nation's first president, George Washington? The History Detectives call in a fake buster and art historian to discover if this is a national treasure. Patty Cannon The Place: Federalsburg, Maryland Was Jack and Rose's home once the headquarters of kidnapper and slave trader Patty Cannon? Trumpet The Place: Bucks County, Pennsylvania Was this trumpet, bought by a Philadelphia man at auction, actually played during the battles that won America's independence from England?

Lee's Last Orders The Place: Beech Island, South Carolina Is the Beech Island Agricultural Club's copy of Confederate General Robert E. Lee's farewell address the original? Natchez House The Place: Natchez, Mississippi How could Robert Smith, a former slave, afford to build this magnificent home for himself in 1851? Napoleonic Sword The Place: St. Martinville, Louisiana A family legend has it that when a doctor treated Napoleon at the Battle of Wagram in Austria, the great General was so grateful he rewarded him with a fine sword, which has been kept in the family ever since.

John Brown's Letters The Place: Sacramento, California Does a Californian woman own a treasure trove of John Brown's documents? Tukufu sets out to authenticate the letters and delve into her family tree to prove if she is related to the famous abolitionist. Japanese Tea House The Place: Gilroy, California How did an authentic Japanese house become part of the famed San Francisco World Fair just before World War II? The history detectives attempt to reveal the origins of the house and how it got there. Poems The Place: San Francisco, California Kathleen Wong, a second-generation Chinese-American calls in the history detectives to trace her ancestors' perilous journey to America. She wants to know whether any of the hundreds of poems left on the walls at the West Coast Angel Island detention center relate to her family.

The Depot That Made Dallas The Place: Dallas, Texas A local historian calls in the History Detectives to find out if a disused depot was the first railroad station in Texas and if it was responsible for putting Dallas on the map. Mexico Peso The Place: San Antonio, Texas Searching through his great-grandfather's belongings, a San Antonio man finds Mexican currency and suspects a link to infamous bandits Emiliano Zapata and Pancho Villa. Did this money play a part in the Mexican revolution in the 1910s and how did it end up in the hands of a quiet family man? Pirate Spyglass The Place: Texas City, Texas Jean Lafitte was a fearsome pirate, an ingenious privateer, and a war hero. A Texas library is donated a spyglass said to be handed down from Lafitte to his ship captain. Was it?

Ventriloquist Dummy The Place: Brooklyn, New York Where did ""Sam"" the first black ventriloquist dummy, come from? Did he change the way Americans viewed race in the early 20th century? Home of Lincoln Assassination Plot? The Place: Greenwich Village, New York Did John Wilkes Booth, the infamous assassin of Abraham Lincoln, spend time in this woman's house planning the assassination? 34 Star Flag The Place: Staten Island, New York Did a 34-star Civil War-era flag in the possession of a New York historical society once save a boarding house from being burned down? Legend says it replaced a confederate flag hung at the height of Civil War hysteria.

Sheridan's House? The Place: Grand Ronde, Oregon Although the locals have little interest in this abandoned Dutch Colonial Style home, new research suggests the house may originally have been built as officer quarters for the Union Army by a young Philip Sheridan, before he became a famous general. Mark Twain Watch? The Place: Oregon The grandson of prominent Oregonian Captain Ainsworth wants to know if his watch was a gift from noted American author Samuel Clemens. Prisoner Poem The Place: Salem, Oregon Where did this Revolutionary War poem, recently discovered in an antique trunk, come from? Did the author, an American prisoner of war in England, write it there? If so, where was it for over two centuries, and how did it end up in Oregon?

The Love Dish The Place: Philadelphia, Pennsylvania Was a set of 18th century china emblazoned with hearts and arrows given by the Marquis de Lafayette to Elizabeth Willing, the popular wife of the Patriot Mayor? Rebel Gun The Place: Mercer, Pennsylvania Local lore says this late 18th Century flint-lock rifle was recovered from the hideout of infamous Tory bandit Moses Doan after a raid in 1783. Prison Plaque The Place: Philadelphia, Pennsylvania A recently-found plaque suggests that inmates from Philadelphia's Eastern State Penitentiary were recruited to fight in World War One. Was this an extraordinarily progressive prison or just wartime desperation?

Civil War-Era Submarine The Place: New Orleans, Louisiana In Louisiana's bustling French Quarter sits a surprising remnant of American warfare - a Civil War-era submarine. Salvaged from the depths of a New Orleans lake, the origin of this vessel remains a murky mystery. Now a New Orleans man wants to know if his great-grandfather helped build the iron-clad wonder. Red Cloud's Peace Pipe? The Place: Livermore, California Was this peace pipe given to a Californian woman's ancestor by the famous warrior Chief Red Cloud? The ancestor was the Indian agent who moved the Oglala Lakota to a Reservation in South Dakota. Would Chief Red Cloud have given such a gift to a U.S. government official? The History Detectives go back to the turbulent days of the 1870s and a battle of wills and political scandal that reached the highest levels of government. Thomas Edison's House? The Place: Union, New Jersey This strange house is said to have been designed and built by Thomas Edison. Did the

Early Monopoly? The Place: Arden, Delaware A man in Delaware has an old board game that bears a remarkable similarity to Monopoly, but was made 20 years before Parker Brothers patented their creation. Could he own the earliest version of the world's best-selling board game? History Detectives investigates Monopoly's history and discovers a surprising story. Rather than originating in the Great Depression of the 1930s, Monopoly could be a much older game, reflecting an economic argument that - if followed - would have created a radically different economy than today's. Japanese Internment Camp Artwork The Place: San Francisco, California A San Francisco archive has discovered a set of watercolor paintings of what appears to be a prison camp. Piecing them together shows they were painted on the back of a Japanese-American internment notice from 1942. What is the story behind these paintings? Who was the artist? And what was his or her fate? History Detectives uncovers the dramati

World War II Landing Craft The Place: Bayfield, Wisconsin A craft used for dredging and hauling rocks in Bayfield's harbor could hold a dramatic secret. A local man whose father fought in the Second World War claims that, 60 years ago, the vessel played a vital role in the D-Day landings, when it transported American tanks on to the beaches of Normandy. Could this ship really be one of the 1500 LCT103 ""Landing Craft Tanks"" designed and built to support the amphibious landings of World War II, and did it really see action off the beaches of France? The Abolitionist Flag The Place: Michigan What two Michigan brothers believed was an old sheet in a family trunk may have contributed to the end of slavery in America. Was the sheet a flag an ancestor may have used to campaign for the creation of Free States? Or was it used as propaganda in a pivotal pre-Civil War campaign? History Detectives explores the politically charged abolition movement to reveal the surprising past of this fam

The First Movie Studio? The Place: Los Angeles, California Lincoln Heights is a quiet neighborhood in northeast Los Angeles located far from the glitz and glamour normally associated with Hollywood. But a resident there thinks the city's first motion picture studio may be located right in her very own neighborhood park. Could a broken gateway once have been the grand entrance to the beginning of Hollywood history? Warner Ufa Lighter The Place: Los Angeles, California A California man spends $50 at a flea market on an antique lighter that could be a piece of Hollywood history. It is engraved with ""Harry Warner"" on one side and ""Ufatone"" on the other. Harry Warner was one of the founders of Warner Brothers, whereas Ufa was Germany's largest studio and Hollywood's biggest competition. What is the connection between Harry Warner, known for his anti-fascist commitment, and a studio that became the propaganda tool of the Nazi party? King Kong Camera? The Place: Washington State and