Subcategories - Frontier, Pioneers
- Albert Bierstadt
- Annie Oakley
- Anthony Wayne
- Apache Wars
- Astorian Expeditions
- Baltimore and Ohio Railroad Begins Operation
- Battle of Fallen Timbers
- Battle of Little Bighorn
- Battle of Wounded Knee
- Brigham Young
- Calamity Jane
- California Gold Rush
- Cartier and Roberval Search for a Northwest Passage
- Champlain’s Voyages
- Chief Joseph
- Chisholm Trail Opens
- Closing of the Frontier
- Cochise
- Congress Passes the Taylor Grazing Act
- Crazy Horse
- Daniel Boone
- Drake Lands in Northern California
- Ferdinand Vandeveer Hayden
- First Riel Rebellion
- Fraser River Gold Rush
- Frederick Jackson Turner
- Frémont’s Expeditions
- Frobisher’s Voyages
- George Caleb Bingham
- George Rogers Clark
- George Vancouver
- Geronimo
- Grey’s Riders of the Purple Sage Launches the Western Genre
- Homestead Act
- Hudson Explores Hudson Bay
- Indian-white relations: Canadian
- Indian-white relations: U.S., 1775-1830
- James Jerome Hill
- Jedediah Smith
- John C. Frémont
- John Wesley Powell
- Johnny Appleseed
- Kit Carson
- Klondike Gold Rush
- Laura Ingalls Wilder
- Louis Jolliet
- Louisiana Purchase
- Mackenzie Reaches the Arctic Ocean
- Meriwether Lewis and William Clark
- Mormon Migration to Utah