Personal and professional papers of the foreign correspondent. The collection includes telexes from the Korean War and from assignments across Southeast Asia, letters to and from Steinberg, annotated copy and clips of published work, fiction by Steinberg, various items Steinberg collected in his work and travels, and photographs. Items from the Steinberg family collection include illustrations and book covers by Isador N. Steinberg.

Correspondence, manuscripts, documents, lists, and subject files of the Mexican Communist Party (Partido Comunista Mexicano) from the 1950s. Included are organizational records of the national party as well as many local groups, and folders on a great range of topics including workers in the petroleum industry, teachers, relations with other national communist parties, finances, front groups, factionalism within the party, party conferences, party history, and biographical data.

The Juan J. Linz papers contain correspondence, personal documents, awards, photographs, notes, writings, speeches, lectures and courses notes, research files, press coverage and interviews, and printed material, dating from 1920s to 2010. The materials also include one box of materials on Columbia Student Unrest in 1968. The collection provide an insight on Juan J. Linz's family and childhood as well as his education and his work as a political scientist and a professor.

The V. K. Wellington Koo papers document the diplomatic legacy of Wellington Koo as a Chinese statesman and diplomat of the 20th Century. The papers primarily consist of materials collected during Koo's diplomatic career, relating to the Lytton Commission, 1932-1933; the League of Nations, 1931-1940; the United Nations, 1944-1946; his ambassadorships to France, 1932-1941; to Britain, 1941-1946; to the United States, 1946-1956; as the Senior Advisor to the Republic of China from 1956; and as the Judge on the International Court of Justice, 1957-1966. The materials include correspondence, diaries, memoranda, manuscripts, documents, notes, speeches, maps, photographs, printed material, and audio visual material. The bulk of the materials emphasizes China's domestic and foreign affairs, such as the Sino-Japanese conflict, World War II and the Cold War in the Far East region, as well as the League of Nations and the United Nations.

This collection contains the personal and professional papers of Marxist scholar and editor Herbert Joseph Putz written under the pseudonym Erik Bert.

The collection includes drafts of his work, professional and personal correspondence, emails (both digital and in hard copy), notebooks, dream journals, heavily annotated books, lecture notes, teaching materials, photographs and ephemera. Several RBML collections already contain correspondence with Berman. For scholars, this collection will provide important new insights into the thought and work of a leading late-20th-century New York City intellectual. An important segment of the Marshall Berman papers consists of digital materials connected with his more recent work as a writer, scholar, and teacher. The files are currently stored on his home computer.