| Abandoned military reservations--Texas [1] |
| Abandonment of property--Confederate States of America [1] |
| Abandonment of property--Law and legislation [1] |
| Abolitionists--United States [1] |
| Academy of Music (New York, N.Y.) [1] |
| Acosta de Samper, Soledad, 1833-1913 [3] |
| Adams (Steamer) [1] |
| Adultery [3] |
| Advertising, Public service--New York--New York [2] |
| African Americans--California--San Francisco [1] |
| African Americans--Colonization--19th century [1] |
| African Americans--Colonization--Costs [1] |
| African Americans--Louisiana--New Orleans [1] |
| African Americans--Southern States--History--19th century [1] |
| Agaves--Mexico [1] |
| Agricultural implements--Mexico--19th century [1] |
| Agriculture--United States--History--19th century [1] |
| Aguascalientes (Mexico)--Description and travel [2] |
| Ahumada, Miguel, 1844-1917 [2] |
| Alabama--Politics and government--To 1865 [2] |
| Alamo (San Antonio, Tex.)--Siege, 1836 [2] |
| Alamo (San Antonio, Tex.)--Siege, 1836--Personal narratives [1] |
| Alamo--Siege, 1836--Fiction [1] |
| Alaska--Boundaries--British Columbia [1] |
| Albany (N.Y.)--Description and travel [5] |
| Alcatraz Island (Calif.) [1] |
| Alcoholic beverages--United States--California [1] |
| Alert (Sloop : 1856-1895) [1] |
| Alexander VI, Pope, 1431-1503 [2] |
| Aliens--United States [1] |
| Allegheny Mountains [1] |
| Allegiance--Guatemala [2] |
| Almonte, Juan Nepomuceno, 1803-1869 [4] |
| Alonzo, Martin [2] |
| Altamarino, Ignacio Manuel, 1834-1893--Family life [2] |
| Altamarino, Ignacio Manuel, 1834-1893--Friends and associates [2] |
| Altamarino, Ignacio Manuel, 1834-1893--Health [2] |
| Altamira, Juan Rodriguez de Albuerne, marques de [2] |
| Altamirano, Ignacio Manuel, 1834-1893--Diaries [2] |
| Alton (Ill.)--Economic conditions--19th century [1] |
| Alton (Ill.)--History [1] |
| Alvarez, Diego--Estate [2] |
| Alvarez, Juan, 1790-1867 [1] |
| Amazon River [1] |
| American Bottom (Ill.) [1] |
| American Colonization Society [1] |
| American Confederate voluntary exiles [1] |
| American literature--19th century [3] |
| American newspapers [1] |
| American periodicals [2] |
| Amnesty--Guatemala [4] |
| Amnesty--United States [3] |
| Anderson Relief Association [1] |
| Andes [3] |
| Andrei, Antonio de, fiscal [2] |
| Animals--Southwest, New [2] |
| Antilles, Greater [3] |
| Antiquities--Central America [3] |
| Antiquities--Peru [3] |
| Antonius, Marcus, 83?-30 B.C. [3] |