This series consists of the diaries and journals of Sergio Pitol. Diaries consist of dated entries with personal information and recounts of Pitol's life. Original handwritten diaries are filed in Subseries 1 and typescript transcriptions of some diary entries are filed in Subseries 2. Journals consist of monthly records of correspondence, works submitted for publication, and payment of these works.

This series consists of 18 notebooks in which Pitol recorded reflections, ideas, themes, characters, references to other writers, miscellaneous notes, and other information about his literary production. Among these notebooks are the first draft iterations of Pitol's works. Some notebooks also have personal diary entries.

This series consists of later drafts or final versions of Pitol's novels, short stories, essays, anthologies, and memoirs. Manuscripts for El desfile del amor, Domar a la divina garza, El viaje, and La vida conyugal can be found in this series. Note: Many of these manuscripts are accompanied by manilla cover sheets that further explain the manuscript's contents and are numbered according to the numbering scheme utilized by Pitol's assistants.

This series consists of letters from friends, writers, artists, literary critics, agents, and publishers. It includes a wide range of writers and artists such as Rosario Castellanos, José Donoso, Carlos Fuentes, Witold Gombrowicz, María Luisa Mendoza (la China), Carlos Monsivaís, Augusto Monterroso, José Emilio Pacheco,Octavio Paz, Elena Poniatowska, Manuel Puig, Juan Soriano, and Juan Villoro among many others.

This series includes Pitol's personal documents such as calendars, government identification documents, address books, printed materials,

This series consists of writings of other authors about Pitol's work, mostly theses and dissertations.