Collection consists of approximately 130 letters sent from various writers and cultural figures from Latin America and Spain to Argentine educator and writer Antonio Aita (1891-1966).

This collection consists of 20th century American Literature pamphlets, catalogs, and printed ephemera.

Ronyoung Kim was a Korean American author, best known for her novel "Clay Walls." Her husband, Richard Hahn, was a doctor and writer as well. This collection comprises primarily biographical materials, writings, academic papers, printed materials, photographs, and correspondence created and collected by both Ronyoung Kim and Richard Hahn, documenting Kim's personal life and professional career. It also contains correspondence and printed materials by and about Richard Hahn.

Moshe Lazar (1928-2012) was a professor in many subjects at the University of Southern California from the late 1970s until a year before his death. In addition to the many topics he taught at the University, he actively and avidly researched a variety of topics related to medieval literature, antisemitism, and Sephardic studies. The materials in this collection span the breadth of his scholarly interests and activities.