Series V: Affiliated and Allied Organizations, 1911-2007, inclusive

Following the military led coup d'état on September 11, 1973 which overthrew the Chilean socialist government led by Salvador Allende and resulted in a military dictatorship, thousands of Chileans were arrested, killed, or disappeared. The National Coordinating Center in Solidarity with Chile, based in New York City, was one of several campaigns worldwide established in response to the coup and its aftermath. The CPUSA played a key role in the Center's formation and activities. This subseries contains correspondence of the Center, much of it to/from national coordinator (and Communist Party activist) Susan Borenstein, as well as correspondence of Beatriz Allende and Hortensia Bussi de Allende (respectively, Salvatore Allende's daughter and widow). Some highlights include files related to the activities of Chile Democratico; materials on the Partido Comunista de Chile and its leader Luis Corvalan; documents on the plight of Chilean health care workers and trade unionists; and records on the tortured, the disappeared, and the exiled.

The Association of Lithuanian Workers, or LDS (Lietuviu Darbininku Susivienijimas), was founded in 1930 as a fraternal organization politically oriented toward the CPUSA. From 1953 to 1957 the LDS was on the U.S. Attorney General's list of subversive organizations. As of 2003, the LDS continued to administer an insurance program, and in 2006 the LDS was merged into the Royal Arcanum, a non-ethnically-based fraternal organization. Although founded in New York, the bulk of the subseries derives from the organization's activity in Chicago and its environs, where Lithuanian American radicalism was centered. This subseries holds some correspondence, notably between the U.S. Attorney General's office and Jacob Pauliukas, the editor of the LDS' Chicago Lithuanian language newspaper Vilnis. There are also files on allied Lithuanian American progressive organizations and on Lithuanian World War II war criminals. Some scrapbooks are also in this subseries, including two which pertain to the life and work of Sophie Kaross, a Lithuanian American Communist. Much of the material is in Lithuanian.

Subseries C consists of records from several youth organizations affiliated with the Communist Party at the national and local level. These youth organizations began appearing in the early 1920s and continued to form or reform throughout the 20th century; the Young Communist League (YCL) and the Young Workers Liberation League (YWLL) are perhaps the most well-known. The records of the Young Communist League make up the bulk of the subseries. Records from the first incarnation of the Young Communist League (1922-1943) are present; however, the majority of the YCL's records document their activities following its reformation in 1983. Records detailing the activities of the W.E.B. Du Bois Clubs of America and the Labor Youth League are also available in this subseries. These records include correspondence, educational materials, essays, reports, notes, meeting minutes, and organizing materials as well as select audio and video recordings from YCL and YWLL conventions, meetings, rallies, and educational programs.

An accretion of Young Communist League records was added to this series in 2018. These materials include pamphlets and ephemera from youth festivals, National Convention organizing files, drafts and articles from the publication Dialog, and a small amount of correspondence. They also include many unprocessed digital files on several CD-R, DVD-R, and floppy disks containing digital images, administrative files, presentations, reports, articles, and discussion drafts dated from 1996 to 2009.