This section of the Timeline of United States history concerns events from 1820 to 1859.
U.S. territorial extent in 1820
U.S. territorial extent in 1830
U.S. territorial extent in 1840
U.S. territorial extent in 1850
- John S. Galbraith. British-American Competition in the Border Fur Trade of the 1820s. Minnesota History, Vol. 36, No. 7 (Sep., 1959), pp. 241-249.
- Robert Henry Billigmeier and Fred Altschuler Picard, eds. The old land and the new : the journals of two Swiss families in America in the 1820's. Minneapolis : University of Minnesota Press, 1965.
- Merrill D Peterson. Democracy, liberty and property; the State Constitutional Conventions of the 1820's. Indianapolis, Bobbs-Merrill Co., 1966.
- Robert A. McCaughey. From Town to City: Boston in the 1820s. Political Science Quarterly, Vol. 88, No. 2 (Jun., 1973), pp. 191-213.
- James Brewer Stewart. Evangelicalism and the Radical Strain in Southern Antislavery Thought During the 1820s. The Journal of Southern History, Vol. 39, No. 3 (Aug., 1973), pp. 379-396.
- Anne M. Boylan. Sunday Schools and Changing Evangelical Views of Children in the 1820s. Church History, Vol. 48, No. 3 (Sep., 1979), pp. 320-333
- Priscilla Ferguson Clement. The Philadelphia Welfare Crisis of the 1820s. The Pennsylvania Magazine of History and Biography, Vol. 105, No. 2 (Apr., 1981), pp. 150-165.
- Barbara Cloud. Oregon in the 1820s: The Congressional Perspective. The Western Historical Quarterly, Vol. 12, No. 2 (Apr., 1981), pp. 145-164.
- David J Russo. Keepers of our past : local historical writing in the United States, 1820s-1830s. New York : Greenwood Press, 1988.
- James L. Huston. Virtue Besieged: Virtue, Equality, and the General Welfare in the Tariff Debates of the 1820s. Journal of the Early Republic, Vol. 14, No. 4 (Winter, 1994), pp. 523-547
- George A. Thompson, Jr. Counterfeiter's Jargon of the 1820s. American Speech, Vol. 71, No. 3 (Autumn, 1996), pp. 334-335.
- Charles R. Schultz. Erasmus Gest's Recollections of Life in the Middle West in the 1830s. Indiana Magazine of History, Vol. 73, No. 2 (June 1977), pp. 125-142.
- William R. Swagerty. A View from the Bottom Up: The Work Force of the American Fur Company on the Upper Missouri in the 1830s. Montana: The Magazine of Western History, Vol. 43, No. 1, Fur Trade Issue (Winter, 1993), pp. 18-33.
- Curtis D. Johnson. Supply-Side and Demand-Side Revivalism? Evaluating the Social Influences on New York State Evangelism in the 1830s. Social Science History, Vol. 19, No. 1 (Spring, 1995), pp. 1-30.
- Mary Hershberger. Mobilizing Women, Anticipating Abolition: The Struggle against Indian Removal in the 1830s. The Journal of American History, Vol. 86, No. 1 (Jun., 1999), pp. 15-40
- Christine MacDonald. Judging Jurisdictions: Geography and Race in Slave Law and Literature of the 1830s. American Literature, Vol. 71, No. 4 (Dec., 1999), pp. 625-655.
- Ralph Mann. Mountains, Land, and Kin Networks: Burkes Garden, Virginia, in the 1840s and 1850s. The Journal of Southern History, Vol. 58, No. 3 (Aug., 1992), pp. 411-434.
- Harlan D. Parker. The Musical Cabinet: An Educational Journal of the Boston Area in the 1840s. Bulletin of the Council for Research in Music Education, No. 116 (Spring, 1993), pp. 51-60.
- John W. Quist. "The Great Majority of Our Subscribers Are Farmers": The Michigan Abolitionist Constituency of the 1840s. Journal of the Early Republic, Vol. 14, No. 3 (Autumn, 1994), pp. 325-358. also
- Raymond L. Cohn. Nativism and the End of the Mass Migration of the 1840s and 1850s. The Journal of Economic History, Vol. 60, No. 2 (Jun., 2000), pp. 361-383.
- Patricia Junker. Thomas Cole's "Prometheus Bound:" An Allegory for the 1840s. American Art Journal, Vol. 31, No. 1/2 (2000), pp. 32-55.
- Ronald J. Zboray, Mary Saracino Zboray. Gender Slurs in Boston's Partisan Press during the 1840s. Journal of American Studies, Vol. 34, No. 3, Part 1: Living in America: Recent and Contemporary Perspectives (Dec., 2000), pp. 413-446.
- Alice Taylor. From Petitions to Partyism: Antislavery and the Domestication of Maine Politics in the 1840s and 1850s. The New England Quarterly, Vol. 77, No. 1 (Mar., 2004), pp. 70-88.
- P. L. Rainwater. Economic Benefits of Secession: Opinions in Mississippi in the 1850s. The Journal of Southern History, Vol. 1, No. 4 (Nov., 1935), pp. 459-474.
- Christopher Hatch. Music for America: A Critical Controversy of the 1850s. American Quarterly, Vol. 14, No. 4 (Winter, 1962), pp. 578-586.
- William W. Chenault, Robert C. Reinders. The Northern-born Community of New Orleans in the 1850s. The Journal of American History, Vol. 51, No. 2 (Sep., 1964), pp. 232-24.
- Howard H. Bell. Negro Nationalism in the 1850s. The Journal of Negro Education, Vol. 35, No. 1 (Winter, 1966), pp. 100-104.
- Jane H. Pease, William H. Pease. Confrontation and Abolition in the 1850s. The Journal of American History, Vol. 58, No. 4 (Mar., 1972), pp. 923-937.
- Howard I. Kushner. Visions of the Northwest Coast: Gwin and Seward in the 1850s. The Western Historical Quarterly, Vol. 4, No. 3 (Jul., 1973), pp. 295-306.
- Michael Fellman. Theodore Parker and the Abolitionist Role in the 1850s. The Journal of American History, Vol. 61, No. 3 (Dec., 1974), pp. 666-684.
- Anne Firor Scott. Women's Perspective on the Patriarchy in the 1850s. The Journal of American History, Vol. 61, No. 1 (Jun., 1974), pp. 52-64.
- James P. Morris. An American First: Blood Transfusion in New Orleans in the 1850s. Louisiana History: The Journal of the Louisiana Historical Association, Vol. 16, No. 4 (Autumn, 1975), pp. 341-360.
- Marshall Scott Legan. Railroad Sentiment in North Louisiana in the 1850s. Louisiana History: The Journal of the Louisiana Historical Association, Vol. 17, No. 2 (Spring, 1976), pp. 125-142.
- Carl Abbott. Indianapolis in the 1850s: Popular Economic Thought and Urban Growth. Indiana Magazine of History, Vol. 74, No. 4 (December 1978), pp. 293-315.
- Dale Baum. Know-Nothingism and the Republican Majority in Massachusetts: The Political Realignment of the 1850s. The Journal of American History, Vol. 64, No. 4 (Mar., 1978), pp. 959-986.
- Susan Jackson. Movin' On: Mobility through Houston in the 1850s. The Southwestern Historical Quarterly, Vol. 81, No. 3 (Jan., 1978), pp. 251-282.
- Matilda W. Rice. The 4th of July in the 1850s. Minnesota History, Vol. 49, No. 2 (Summer, 1984), pp. 54-55.
- Lori D. Ginzberg. "Moral Suasion Is Moral Balderdash": Women, Politics, and Social Activism in the 1850s. The Journal of American History, Vol. 73, No. 3 (Dec., 1986), pp. 601-622.
- Carla L. Peterson. Capitalism, Black (Under)Development, and the Production of the African-American Novel in the 1850s. American Literary History, Vol. 4, No. 4 (Winter, 1992), pp. 559-583.
- Marius M. Carriere Jr. Anti-Catholicism, Nativism, and Louisiana Politics in the 1850s. Louisiana History: The Journal of the Louisiana Historical Association, Vol. 35, No. 4 (Autumn, 1994), pp. 455-474.
- Vincent J. Bertolini. Fireside Chastity: The Erotics of Sentimental Bachelorhood in the 1850s. American Literature, Vol. 68, No. 4 (Dec., 1996), pp. 707-737.
- Larry Knight. The Cart War: Defining American in San Antonio in the 1850s. The Southwestern Historical Quarterly, Vol. 109, No. 3 (Jan., 2006), pp. 319-336.