Wikimedia
Wikipedia: Aroostook War
The boundary dispute between the United States and Britain which led to the Aroostook War in 1839 is outlined in detail. The war was settled with the signing of the Webster-Ashburton Treaty in 1842. There are many links to additional...
Oklahoma State University
Oklahoma Historical Society: An Early Account of the Cherokees [Pdf]
A first-hand account describing the Cherokee Native Americans during the period of their displacement (1837) from the southern United States to Oklahoma Indian territory.
Digital History
Digital History: The u.s. Canadian Border
The border between the United States and Canada in the east and Midwest was still not settled in the 1840s. See what happened that precipitated a final decision.
Other
Marshfield Town History: Daniel Webster
This biography on the life of Daniel Webster discusses the various accomplishments of his career in law, his tenure as Secretary of State, and his work in politics to preserve the nation.