The Movimiento de Liberacion Nacional (MLN) was founded in 1977 as a coalition of anti-imperialist Puerto Rican and Chicano-Mexicano activists in the United States.  They united around:

1) support for the Puerto Rican people’s right to use any means necessary, including armed struggle, to establish independence and socialism in Puerto Rico.

2) support for the socialist reunification of Mexico (i.e., the creation of a socialist Mexico that includes the land that was formerly the northern half of Mexico until its seizure by the United States through the Mexican-American War.)

3) non-collaboration with U.S. federal grand juries or any repressive agency investigating the armed clandestine movements or mass organizations

4) support for grand jury resisters, political prisoners, and prisoners of war.

5) non-participation in the electoral processes in Puerto Rico and the U.S.

The MLN developed a Puerto Rican Commission and a Mexican Commission, which in 1983 separated into two distinct organizations, MLN-Puertorriqueno (MLN-PR) and MLN-Mexicano (MLN-M).

The collection includes a broad number of internal monographs, books and pamphlets. The paper collection includes numerous discussion and political analysis documents, an intense allegory of their struggle. The MLN holdings include sub-collections for their political organ, LIBERTAD, as well and their sub-committee, National Committee to Free Puerto Rican Political Prisoners and Prisoners of war.