• 3 Temporary Relocation Library
• 1 Geology and Geophysics Library (Leith)
• 1 Law Library
• 1 Social Work Library (Franks)

• 29 History
• 15 Description and travel
• 15 Foreign relations
• 15 Politics and government
• 6 Botany
• 6 Catholic Church
• 6 Commerce
• 6 Sources
• 6 Zapotec Indians
• 5 Air
• 5 Missions
• 5 Pollution
• 5 Railroads
• 5 Social conditions
• 4 Economic conditions
• 4 Grammar
• 4 Pokonchi language
• 4 Refugees
• 4 Women
• 3 Automobiles
• 3 Economic aspects
• 3 Economic policy
• 3 Foreign economic relations
• 3 Land tenure
• 3 P.S.O.E. (Political party)

• 8 Library of Congress. Congressional Research Service
• 6 United States. Department of State
• 4 Gage, Thomas, 1603?-1656
• 4 Mexico. Dirección General de Estadística
• 3 O'Shaughnessy, Edith, 1870-1939
• 3 Saeger, Mark L
• 3 Science Applications International Corporation
• 3 U.S.-México Border Information Center on Air Pollution
• 3 Villarreal, M. Angeles
• 3 Wertman, Patricia A
• 2 Flores Magón, Ricardo, 1873-1922
• 2 Grimes, Maria H
• 2 Heller, Karl B. (Karl Bartholomäus), 1824-1880
• 2 Hortop, Job
• 2 Jeffery, John (John D.)
• 2 Mexico. Secretaría de Fomento, Colonización e Industria
• 2 Moziño, José Mariano, 1757-1820?
• 2 Padilla González, Francisco
• 2 Pani, Alberto J., 1878-1955
• 2 Peñafiel, Antonio, 1830-1922
• 2 Prieto, Indalecio, 1883-1962
• 2 Reiche, Karl Friedrich, 1860-
• 2 Sessé, Martín, -1809
• 2 University Publications of America (Firm)
• 1 Academia médico-quirúrgica (Puebla de Zaragoza, Mexico)

• 72 English
• 52 Spanish
• 4 French
• 2 German
• 1 Greek, Modern (1453-)
• 1 Latin

• 22 United States
• 15 Spain
• 6 Central America
• 5 Oaxaca Valley
• 4 Latin America
• 4 Mexico City
• 3 Mexico City (Mexico)
• 3 Oaxaca (Mexico : State)
• 3 Oaxaca Valley (Mexico)
• 3 Texas
• 3 West Indies
• 3 Yucatán (State)
• 2 California
• 2 Canada
• 2 Ciudad Juárez
• 2 Coyotepec (Mexico)
• 2 Cuba
• 2 El Paso
• 2 Mexique
• 2 México
• 2 Oaxaca
• 2 Oaxaca (State)
• 2 Paracho
• 2 San Pablo Villa de Mitla

Limit year range