Investigations
Map
The History Detectives have traveled the length and breadth of the country, delving into family legends, local folklore and stories behind potentially extraordinary objects in everyday American homes, cities and small towns.
Browse the investigations on the map and see what we've revealed in your area.
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Investigations
Lost Gold Ship
Is this wreck in Alaska the remains of a steamship carrying miners to the great Klondike Gold Rush of 1897?
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Techniques
Military Research
Using military records in your research.
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Investigations
Civil War Letters
What can these letters reveal about a racially-charged massacre on a Civil War battlefield?
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Investigations
Natchez House
How did a free man of color come to own this house twelve years before emancipation?
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Investigations
Sears Home
Might an Ohio couple's residence be a long-forgotten Sears home?
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Investigations
Lost City of Gold
What can these carved letters reveal about the first explorers to visit the American Southwest?
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Investigations
Continental Currency
Could this $6 bill represent America’s first declaration of its independence?
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Techniques
Analyzing Art
Taking a closer look at works of art.
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Investigations
Mexican Currency
What role did this money play in the Mexican Revolution?
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Investigations
Isleton Tong
Was this building a safe haven for persecuted immigrants, or a hub for organized crime?
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Investigations
Great Mexican War Posters
Is this an advertisement for a film made by an eyewitness to the Mexican Revolution?
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Investigations
Ventriloquist Dummy
How did an African-American ventriloquist act become so successful in a time of racial unrest?
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Investigations
Howard Hughes Crash
Was this the instrument that chartered Howard Hughes' near fatal plunge into Beverly Hills?
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Techniques
Patent Analysis
Find out the origin and detail surrounding an invention or innovation.
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Techniques
Genealogy - Checklist
A printable 'To Do' list to use when using genealogy.
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Techniques
Case File: Marriage Of Convenience
How to discover things you didn't know about people.
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Investigations
Civil War Bridge
Has a new discovery rewritten Civil War history?
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Techniques
Case File: Hidden Meanings
Finding out more about the author of a diary.
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Investigations
Andrew Jackson's Mouth
How was this wood fragment connected to one of the most celebrated political protests of the 19th century?
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Techniques
Photographs - Checklist
Printable checklist to use when analyzing photographs.
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Investigations
Nazi Spy Toys
Did a Nazi spy buy these toy soldiers?
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Techniques
Stones And Minerals - Checklist
Printable checklist to use when studying stones and minerals.
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Techniques
Forensic Anthropology
How to use a multi-disciplinary approach to uncover the secrets hidden in bones.
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Investigations
John Brown Pike
How did this metal blade spark violent tension between the North and the South?
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Techniques
Weapon Dating
Determining the age of a weapon.
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Techniques
Gun Timeline
A timeline of firearm history.
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Investigations
Transistor Radio
Is this the oldest transistor radio in existence?
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Investigations
Manhattan Project Letter
Did this letter help persuade President Harry S. Truman to change policy in the post war era?
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Techniques
Oral History
Learn how to record oral or spoken history.
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Techniques
Preservation
Learn how to preserve papers, books, photographs and textiles.
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Techniques
Historical Research
It's your turn to be a History Detective.
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Techniques
Glossary
A list of useful words and phrase for carrying out historical research.
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Investigations
Whaling Ship
Might a ship docked in Mystic Seaport, hold secrets to the Underground Railroad?
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Techniques
Geological Analysis
Learn how to identify probable age and origin of ceramic, stone and tile objects
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Techniques
Very Old Objects
How to discover fascinating history, from very old objects.
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Techniques
African-American Genealogy