- CMOC : Marvin Richard O'Connell: Manuscripts
- AMOC : Marvin Richard O'Connell: Audio-Visual Material
- AMOC C2257 Audio (Reel) : Consecration of James P. Shannon - Sermon 1965/0331
- AMOC C2257 Audio (Reel) : Marvin O'Connell Sermon - Consecration of J. Shannon 1965/0331
- GMOC : Marvin Richard O'Connell: Graphics
- GMOC 1/01 B/W Print : Portrait of a young priest; photo by Zintsmaster c1940s
- GMOC 1/01 B/W Print : Portrait of an older priest; photo by Allen Studios Inc. c1940s
- GMOC 1/02 B/W Print : Casual portrait of Rev. Marvin O'Connell outside c1970s
- GMOC 1/02 B/W Print : Grade School Class Photo? c1960s
- GMOC 1/02 Color Print : Rev. Marvin O'Connell with James Dufort on his First Holy Communion 1966/12
- GMOC 1/02 Color Print : A man on the ferry to Madeline Island 1968/07
- GMOC 1/02 Color Print : Rev. Marvin O'Connell and others at Patsy Kenefick's First Holy Communion 1966/04
- GMOC 1/03 B/W Prints : Photos for John Ireland Book - Portraits of Archbishop John Ireland; photos from the St. Thomas Audio-Visual Center [two scenes]
- GMOC 1/03 B/W Print : Photo for John Ireland Book - Portrait of Archbishop John Ireland; photo from the Minnesota Historical Society
- GMOC 1/04 B/W Print : Photo for John Ireland Book - Exterior view of a church; photo from the Minnesota Historical Society
- GMOC 1/04 B/W Print : Photo for John Ireland Book - Panorama of a city; photo from the Minnesota Historical Society
- GMOC 1/04 B/W Engraving Print : Photo for John Ireland Book - Portrait of Michael Corrigan; photo from the Minnesota Historical Society
- GMOC 1/04 B/W Engraving Print : Photo for John Ireland Book - Portrait of Bernard McQuaid; photo from the Minnesota Historical Society
- GMOC 1/04 B/W Print : Photo for John Ireland Book - Portrait of three unidentified priests
- GMOC 1/04 B/W Print : Photos for John Ireland Book - Portraits of Rev. Denis J. O'Connell [two scenes]
- GMOC 1/04 B/W Print : Photo for John Ireland Book - Portrait of Rev. Gibbons
- GMOC 1/04 B/W Print : Photo for John Ireland Book - Portrait of Rev. Grace
- GMOC 1/04 B/W Halftone Print : Photo for John Ireland Book - Portrait of Rev. John Lancaster Spalding
- GMOC 1/05 B/W Print : Photo for John Ireland Book - John Ireland and Cardinal Serafino Vannutelli; photo from the College of St. Thomas Audio-Visual Center
- GMOC 1/05 B/W Print : Photo for John Ireland Book - Mr. and Mrs. James J. Hill with Cardinal Serafino Vannutelli; photo from the College of St. Thomas Audio-Visual Center
- GMOC 1/05 B/W Halftone Print : Photo for John Ireland Book - John Ireland with military men on inspection day 1917
- GMOC 1/05 B/W Halftone Print : Photo for John Ireland Book - Archbishop John Ireland, Major Andrew Moses, Archbishop Redwood and others at the Annual Military Inspection; photo from the College of St. Thomas Audio-Visual Center 1915/0514
- GMOC 1/05 B/W Halftone Print : Photo for John Ireland Book - Portrait of Rev. Thomas O'Gorman
- GMOC 1/06 B/W Photocopies : Photocopies of photo for John Ireland Book
- PMOC : Marvin Richard O'Connell: Printed Material
His book The Oxford Conspirators with pages cut for photo reproduction (book reissued by Univ. Press of America).