- CCLO : Charles L. O'Donnell: Manuscripts
- CCLO 1/01 Folder : Class Record Books
- CCLO 1/02 Folder : Students' Mass Book 1909-1916
- CCLO 1/03 Folder : Correspondence- Charles L. O'Donnell to Fr. Joe Boyle 1917-1919
- CCLO 1/04 Folder : Correspondence with J. F. O'Hara 1929-1934
- CCLO 1/05 Folder : Correspondence- F.B.D. Bickerstaff-Drew to O'Donnell 1919-1924
- CCLO 1/06 Folder : Correspondence- Joyce Kilmer to Charles L. O'Donnell 1914-1917
- CCLO 1/07 Folder : Miscellaneous Correspondence 1907-1932
- CCLO 1/08 Folder : Clippings on the death of Joyce Kilmer
- CCLO 1/09 Folder : Manuscript- "The O'Donnell's"
- CCLO 1/10 Folder : Miscellaneous notes, material, etc.
- CCLO 1/11 Folder : Pamphlets
- CCLO 2/01 Folder : Sermon Material
- CCLO 2/02 Folder : Material used at Annual Retreat for Priests
- CCLO 2/03 Folder : Notre Dame Scholastic 1918/0223
- CCLO 2/04 Folder : Photostat Letters- 1889-1940
- CCLO 2/05 Folder : Charles L. O'Donnell's Manuscripts
- CCLO 2/06 Folder : Miscellaneous writings
- CCLO 2/07 Folder : Notebook- notes on Shakespeare and other material
- CCLO 2/08 Folder : "The Prose of Francis Thompson, a Study of Criticism"
- CCLO 2/08 Author : Charles L. O'Donnell
- CCLO 2/09 Folder : "The Shepherd's Peace" by Charles Phillips
- CCLO 2/10 Folder : Miscellaneous Poems, clippings, leaflets, etc.
- CCLO 2/11 Folder : Miscellaneous Poems, clippings, leaflets, etc.
- CCLO 2/12 Folder : Notebook- Poems by Charles L. O'Donnell
- CCLO 3/01 Folder : Literature and Poetry Notes
- CCLO 3/02 Folder : Book- "The University of Notre Dame"
Includes Verses by Charles L. O'Donnell
- CCLO 3/03 Folder : Manuscripts used in Collected Poems
- CCLO 3/04 Folder : Unpublished Poetry by Charles L. O'Donnell
- CCLO 3/05 Folder : Mother M. Barbara
- CCLO 3/06 Folder : G.K. Chesterton Lectures 1930
- CCLO 3/07 Folder : Literary Notes
- CCLO 3/08 Folder : Father Pius
- CCLO 3/09 Folder : Notre Dame Alumnus 1934/06
- CCLO 3/10 Folder : Poetry, Sermons
- CCLO 3/11 Folder : Brother Columba
- CCLO 3/12 Folder : Margaret Reilly
- CCLO 3/13 Folder : Material for a book of "Thoughts"
- CCLO 3/14 Folder : Badges and Beads
- CCLO 3/15 Folder : Miscellaneous Notes
- CCLO 3/16 Folder : Priest's Retreat and Notes
- CCLO 4/01 Folder : "The Core of Wonder"
- CCLO 4/02 Folder : Funeral Sermons
- CCLO 4/03 Folder : Sermons on the Blessed Virgin
- CCLO 4/04 Folder : Letters
Transferred from Special Collections in 1989.
- CCLO 4/05 Folder : Poems
Transferred from Special Collections in 1989.
- CCLO 5/01 Folder : Doctrinal Sermons
- CCLO 5/02 Folder : Occasional Sermons
- CCLO 5/03 Folder : Lectures
- CCLO 5/04 Folder : Railroad Passes 1929
- CCLO 5/04 Document : Chamber of Commerce Membership Card 1934
Added 1987/02/25
- CCLO 5/05 Folder : Letter concerning O'Donnell by John F. McLoughlan 1936/1216
Added 1987/07/15
- CCLO Graphics Box 11/06 Item : Charles L. O'Donnell: Italian Commemorative Medal Certificate for World War I conferred by Benito Mussolini, Minister of War 1925/1020
- OCLO : Charles L. O'Donnell: Objects
- OCLO Artifact Box 23 medal : Italian Medal on red and white ribbon in red box, presented to Charles O'Donnell, CSC; [image of eagle on the front, image of crown on the back] (metal, textile, paper) nd
- OCLO Artifact Box 58 : Army Cap worn by Charles O'Donnell, CSC as a chaplain in World War I ()