History of Mexico-U.S. Migration 

An overview of the types of tools to find primary source material, both at Yale and beyond, is found on this Primary Sources at Yale website. All of the sources listed have their relative strengths and weaknesses. Below are the most popular:

• Orbis is the best tool for finding materials at Yale, though it's not a complete catalog for archival holdings at Yale.

• Worldcat is the most complete source for finding collections around the world.

Another excellent source of primary source material at Yale can be found in the Microfilm Reading Room in the basement of Sterling Memorial Library. This link brings you to a list of major microfilm collections available in the Microfilm Reading Room.

Manuscripts collections

Latin American pamphlet collection, 1568-1949. (Microform) Bethesda, MD: University Publications of America, 1985.
MS 1350

This is a microfiche collection of pamphlets from Mexico, Peru, Argentina, Bolivia, Brazil, Chile, Colombia, Cuba, Ecuador, Guatemala, Haiti, Honduras, Martinique, Panama, Paraguay, Puerto Rico, El Salvador, Uruguay, Venezuela, the West Indies, and other Latin American and South American countries. The pamphlets document the agricultural, economic, legal, military, political, religious, and social activities in these countries. Consult the Guide to Latin American Pamphlets from the Yale University Library (Z1431 +V34 1985 LC) for access.

Arranged in three series: I. Mexican Pamphlets. II. Peruvian Pamphlets. III. Miscellaneous Pamphlets. Patrons must use FICHE 89 instead of the originals.

Revolutionary Mexico in Newspapers, 1900-1929;SML, Microform (RMN)

United States. Dept. of State.
Records of the Department of State relating to the internal affairs of México, 1910-1929. Microfilm. Washington, D.C., National Archives and Records Service.
241 Rolls
FILM RG 59 M-274 (RG59 M-274)
*Finding Aid – Roll 1

United States. Dept. of State.
Records of the Department of State relating to political relations between the United States and México, 1910-1929. Microfilm.
Washington, D.C., National Archives and Records Service.
29 Rolls,
FILM RG 59 M-314 (RG59 M-314)
*Finding Aid – Roll 1

United States. Dept. of State.
Confidential U.S. State Department central files. México, 1940-1944. [microform]: internal affairs [project coordinator, Michael C. Davis].
Frederick, MD: University Publications of America, [1987], c1986.
110 microfilm Rolls
Film B14954 (DSC40-44)

United States. Dept. of State.
Confidential U.S. State Department central files: México: foreign affairs, 1950-1954. (inclusive), Microfilm.
Frederick, Maryland, University Publications of America. 1986.
16 Rolls
Film Misc 1280 (DSC50-54)

United States. Dept. of State.
Confidential U.S. State Department central files: México: foreign affairs, 1955-1959 (inclusive). Microfilm.
Frederick, Maryland, University Publications of America. 1987.
11 Rolls
Film Misc 1229 (DSC55-59)

United States. Dept. of State.
Confidential U.S. State Department central files. México, 1960- January 1963, internal affairs.
Bethesda, Md : University Publications of America, c1999.
24 microfilm Rolls
Film B17983 (DSC60-63)

New York Times (NYT)

National Archives – RG 59 finding aids:

http://www.archives.gov/research/microfilm/m862.pdf

http://www.archives.gov/research/state-dept/finding-aids/manual-1910-49.pdf