Photographic material in the collection includes contact sheets, color slides, and photographic prints.
Morath's documentary photographs depict people and events in a wide range of countries, including Austria, China, England, France, Germany, India, Italy, Romania, Russia, Spain, and Tunisia, as well as throughout Mexico and the United States.
The collection includes portrait studies of public figures, including Yul Brynner, Alexander Calder, Alberto Giacometti, Dustin Hoffman, Henry Moore, Anaïs Nin, Pablo Picasso, Andrei Voznesensky, and Yevgeny Yevtushenko. It also includes projects with her longtime collaborator, artist Saul Steinberg.
Papers in the collection include story lists, captions, notebooks, general files, and publicity related chiefly to her photography. The collection also includes audiovisual material, electronic files, and artifacts.
A group of printed material accompanies the collection and consists of an incomplete set of her monographs, as well as works related to travel, languages, and other subjects.
The collection also chronicles Morath's personal life, including her marriage and family with playwright Arthur Miller, and provides ancillary documentation of his work.
In this guide to the collection, library staff chiefly retained Morath's titles and spellings, while contact sheets include authorized forms of names derived from her story lists.
Chronological arrangements within the collection reflect the image creation date, not the date the photograph was printed. Notes throughout the collection include Morath's "story numbers," when easily discerned by library staff.
Series I, Photographs, includes the bulk of photographic material created by Morath and her personal and family photographs, as well as photographs she collected by other photographers.
Series II, Papers, consists of papers that document the life and work of Morath, including story captions, notebooks, correspondence, clippings, financial records, and awards.
Series III, Photographs and Papers from the Morath-Miller Home, consists of material in the home of Morath and Arthur Miller in Roxbury, Connecticut, immediately before the Beinecke Rare Book and Manuscript Library acquired the material in 2014. It includes personal and family photographs, correspondence, writings and travel notebooks, address books, visiting cards, exhibition catalogs, publicity material, art, and ephemera.
Series IV, Audio Visual Material, consists of sound recordings, videocassettes, and films by or about Morath, and includes interviews with her and documentation of her exhibitions.
Series V, Electronic Files, chiefly consists of the electronic files created by Morath, as well as by the Inge Morath Foundation, including image files and backup files, as well as operating system and utility program files used by her.
Series VI, Objects, consists of the items Morath used as a photographer, including a camera, film canisters, and rubber ink stamps used to mark her prints, as well as other personal effects, including scarves and a suitcase.