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Mary O'Neill Papers

Identifier: CLRC-1082

Scope and Contents

The Mary O'Neill Papers contain typescripts, correspondence, proofs, and related material for children's books written by O'Neill. The collection also contains clippings of magazine articles she wrote, and a large amount of fan mail from children.


  • 1941 - 1977


Conditions Governing Access

Open for use in the Elmer L. Andersen Library reading room.

Conditions Governing Use

This collection may be protected by the Copyright Law of the United States (Title 17, U.S. Code). It is the user's responsibility to verify copyright ownership and to obtain all necessary permissions prior to the reproduction, publication, or other use of any portion of these materials. Researchers may quote from the collection under the fair use provision of the copyright law.

Biographical / Historical

Mary (LeDuc) O'Neill was born February 16, 1908 (one source says 1906) in New York, NY, and died January 2, 1990, in Yuma, AZ. She was an educator, advertising copywriter, and free-lance children's writer. In 1970 she joined the Peace Corps and worked as a writing teacher in Africa and Latin America. Her best known work for children was Hailstones and Halibut Bones, a work that teaches color identification.

Biographical Source: "Mary L(e Duc) O'Neill (1908?-1990)." Something About the Author. Vols. 2, 64. Detroit, MI: Gale, 1971 and 1991.


2.9 Cubic Feet (3 boxes [2 record cartons and 1 hollinger box])

Language of Materials



The collection contains material related to Mary O'Neill's career as a children's book author, including production material and correspondence.


Collection guide arranged alphabetically by published title, with Various Drafts, Correspondence, Magazine Articles, and Miscellaneous material at the end.

Immediate Source of Acquisition

Gift of Mary O'Neill.

Mary O'Neill Papers, 1941-1977
Jim Eyer
Description rules
Describing Archives: A Content Standard
Language of description
Script of description

Revision Statements

  • May 2019: Collection reprocessed and finding aid updated by Caitlin Marineau
  • June 2020: Description updated by Caitlin Marineau.

Collecting Area Details

Contact The Children's Literature Research Collections Collecting Area

Suite 113, Elmer L. Andersen Library