Annotation	Page	Subject	Links
14.1	445	Mexican War	Image - Simon Knaeble: General Taylor Storming Monterey Map - Alvino Herrera: Manuscript map of Mexican War campaign in Mexico (ca. 1848) Text - William Barret Travis: Letter from the Commandancy of the Alamo (February 24, 1836). Image - Thomas Corwin: Against the Mexican War (1847).
14.2	449	Telegraph	Image - Timothy H. O'Sullivan: Constructing Telegraph Lines, April 1864 (1864) Image - J.H. Bunnell: Abridged Catalogue and Manual of Telegraphy (1900). Image - Samuel F. B. Morse: Colored Sketch of Railway Telegraph (ca. 1838). Map - Map showing the Telegraph Lines in Operation, Under Contract and Contemplated to Complete the Circuit of the Globe (ca. mid 1800s). Image - Samuel F. B. Morse: Changes in Morse Code Notation (ca. 1830-1840).
14.3	452	Gold Rush	Audio - John McCready: Clementine Map - James Wyld: Map of the Gold Regions of California (1849) Map 1 Map - James Wyld: Map of the Gold Regions of California (1849) Map 2 Map - James Wyld: Map of the Gold Regions of California (1849) Map 3 Map - James Wyld: Map of the Gold Regions of California (1849) Map 4 Map - James Wyld: Map of the Gold Regions of California (1849) Map 5 Audio - Leon Ponce: The Days of Forty Nine
14.4	460	Clay, Calhoun and Webster Speeches of 1850	Text - John C. Calhoun: Proposal to Preserve the Union (1850). Text - Daniel Webster: Speech to the U.S. Senate in Favor of the Compromise of 1850 (March 7, 1850). Text - Henry Clay: Speech to the U.S. Senate (January 29, 1850).

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