| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z
- MacClintock, William D. Papers
- MacDowell, Charles Henry. Papers
- MacFarland, Faye Millard. Papers
- MacNair, Harley F. Papers
- Mailer, Norman. Manuscript of The Deer Park
- Majima, Seigan. Majima Aammoku Ichibu No Gokui No Makimono
- Manby, George William. Sketches Made in Greenland
- Mandel, Sidney W.. Collection of English Legal Documents
- Manly, John Matthews. Papers
- Manning, Richard. Band. Collection
- Manufacturers of Toledo. Committee on Smoke Abatement. Majority Report of the Investigating Committee
- Marcus, Ralph. Papers
- Margolis, A. Fundamental Principles of Municipal Heating
- Markwick, William. Danish Plants Found in the British Isles
- Martin, August Eduard. Illustrations of Forcepses. Scrapbook
- Martin, August Eduard. Notes
- Martin, John. Book of Receipts
- Materia Medica
- Mathematics Manuscripts
- Mather, Kirtley Fletcher. Papers
- Mathews, Shailer. Papers
- Matthews, Fred. Papers
- Mauder, József. Letter
- Maximow, Alexander A. Papers
- Mayer, Albert A. Papers
- Mayo-Smith, Richard. Papers
- McBurney, Charles. Papers
- McDavid, Raven I. Papers
- McKeon, Richard Peter. Papers
- McLaughlin, Andrew Cunningham. Papers
- McLean, Franklin C. Papers
- McNeill, William H. Papers
- McPartland, Jimmy and Marian. Collection
- Mead, George Herbert. Papers
- Mead, Mildred. Photographs
- Medical History, Correspondence
- Medical Prescriptions
- Medical Prescriptions and Other Recipes
- Medical Tax Reports, Mecklenburg-Schwerin
- Meisen, Vlademar. Treatment of Varices and Their Sequelae by Injection (Eczema and Ulcus Cruris)
- Mentschikoff, Soia. Papers
- Merriam, Charles E. Papers
- Merriam, Robert E. Papers
- Meyer, Leonard B. Papers
- Michelson, Albert A. Papers
- Michigan Governor's Committee to Investigate the Detroit Race Riot. Records
- Miller, Merton H. Papers
- Mills, Ralph J., Jr. Papers
- Minerva. Records
- Modern Cook, The
- Modern Poetry Collection of Miscellaneous Manuscripts
- Modern Poetry Little Magazine Collection
- Modern Poetry Photograph Collection
- Moedebeck, Herman, W.L. Papers on Aeronautics
- Moffitt, George Wilbur. Papers
- Monroe, Harriet. Papers
- Montgomery, Mike. Collection
- Moody, Harriet Brainard. Papers
- Moody, William Vaughn. Papers
- Moore, Eliakim Hastings. Papers
- Moore, James H. Papers
- Morgan, Thomas J. Papers
- Morris, Edward House. Collection
- Morrison, Henry Clinton. Papers
- Morton, Charles, Agency. Collection of American Popular Drama
- Moscow Twelfth International Congress of Medicine. Scrapbook
- Motion Picture Stills. Collection
- Mulliken, Robert S. Papers
- Mulliken, Robert S. Scientific Offprints Collection
- Munting, Abraham. Phytographia Curiosa
- Musham, Harry A. The Graphic Solution of Triangles by Means of the Triangle Diagram/Graphic Calculation
- Music Relating to the University of Chicago. Records