2. Correspondence and Subject Files, alphabetical
- UADR 15/99 Folder : Mul - Mun 1922-1929
- UADR 15/100 Folder : Murphy, C. - Murphy, H. 1923-1929
- UADR 15/101 Folder : Murphy, J. 1924-1929
- UADR 15/102 Folder : Murphy, L. - Murphy, W. 1923-1929
- UADR 15/103 Folder : Murray 1924-1929
- UADR 15/104 Folder : Mus - Mut 1921-1929
- UADR 15/105 Folder : My 1925-1927
- UADR 15/106 Folder : Mabbutt, Charles J. Captain (Baltimore, MD) 1925
- UADR 15/107 Folder : Mackin, James H. (Oswego, NY) 1929
- UADR 15/108 Folder : MacNamara, John A. Rev. (Milford, MA and Garden City, NJ) 1925-1929
- UADR 15/109 Folder : MacRae, Pete (Syracuse, NY) 1929
- UADR 15/110 Folder : Madigan, Edward P. "Slip" (Saint Mary's College, Oakland, California) 1921-1927
- UADR 15/111 Folder : Madigan, Edward P. "Slip" (Saint Mary's College, Oakland, California) 1927-1929
- UADR 15/112 Folder : Magevney, Hugh Junior (Memphis, TN) 1925-1928
- UADR 15/113 Folder : Magidsohn, Joe (Detroit, MI) 1923-1928
- UADR 15/114 Folder : Magie, William H. Doctor (Duluth, MN) 1924-1929
- UADR 15/115 Folder : Magie, Mrs. William H. (Isabelle - Duluth, MN) 1924-1926
- UADR 15/116 Folder : Magie, Mrs. William H. (Isabelle - Duluth, MN) 1926-1928
- UADR 15/117 Folder : Magie, Mr. William H. (Duluth, MN) 1926-1928
- UADR 15/118 Folder : Maher, William "Red" (Centre College, Danville, TX) 1925-1929
- UADR 15/119 Folder : Mahoney, Charles A. (West Point Society of NY) 1920-1929
- UADR 15/120 Folder : Malloy, Pat (Tulsa, OK) 1927-1929
- UADR 15/121 Folder : Malm, F.O. (Advertising - Selling League of Omaha, NE) 1925-1927
- UADR 15/122 Folder : Manley, Martin (Toledo, OH, Chamber of Commerce) 1924-1925
- UADR 15/123 Folder : Manson, Sam R. and Co. Sporting Goods (Hamilton, Canada) 1926-1929
- UADR 15/124 Folder : Maplesden, Lawrence B. (Eartham College, Richmond, IN and Eaton, OH, High School) 1925-1929
- UADR 15/125 Folder : Marelli, Ray C. "Joe" 1926-1927
- UADR 15/126 Folder : Margolis, Harry S. Rabbi (Saint Paul, MN) 1928
- UADR 15/127 Folder : Marine Corps (Quantico, VA) 1923-1925
- UADR 15/128 Folder : Mark, Julius Rabbi (South Bend, IN and Nashville, TN) 1925-1929
- UADR 15/129 Folder : Marquette Univ (Milwaukee, WI) / C.M. Jennings 1924-1926
- UADR 15/130 Folder : Marquette Univ (Milwaukee, WI) / C.M. Jennings 1927-1929
- UADR 15/131 Folder : Marquette Univ (Milwaukee, WI) / Miscellaneousellaneous 1921-1929
- UADR 15/132 Folder : Marshall College, Huntington, WV (Hawley, Roy M.) 1928-1929
- UADR 15/133 Folder : Martin, Joseph A. (Chicago, IL) 1927-1929
- UADR 15/134 Folder : Martineau, Earl F. (Western State Teachers College / Normal School, Kalamazoo, MI) 1926-1928
- UADR 15/135 Folder : Marvel, Fred W. (Brown Univ, Providence, RI) 1926-1928
- UADR 15/136 Folder : Hotel Maryland (Pasadena, CA) 1924-1926
- UADR 15/137 Folder : Masenich, Jay R. Junior (Notre Dame Orchestra) 1925
- UADR 15/138 Folder : Mathews, R.L. (Saint Louis Un, MO, etc. . .) 1920-1929
- UADR 15/139 Folder : Matthewson, Herbert F. (Washington, D.C.) 1927-1929
- UADR 15/140 Folder : Mattingly, S. Twyman (Atlanta, Louisville) 1922-1929
- UADR 15/141 Folder : Maxwell, Don (Chicago Tribune) 1927-1928
- UADR 15/142 Folder : May and Malone, Inc., Athletic Goods Department 1925-1926
- UADR 15/143 Folder : Mayer, Frank G. (MN) 1924-1928
- UADR 15/144 Folder : Mayes, H.I. (Columbia, TN, Military Academy) 1923-1924
- UADR 15/145 Folder : Maypole, George M. (Chicago, IL) 1925-1927
- UADR 15/146 Folder : Maypole, George M. (Chicago, IL) 1927-1929
- UADR 15/147 Folder : Mayser, Charles W. (Franklin and Marshall College, Lancaster, PA) 1925-1928
- UADR 15/148 Folder : McAdams, Frank P. (Watertown, WI) 1927-1928
- UADR 15/149 Folder : McAllister, Frank E. (Kalamazoo, MI) 1927
- UADR 15/150 Folder : McBride, Patrick Reverend C.S.C. (Registrar) 1924-1927
- UADR 15/151 Folder : McCarthy, P.D. Brother (Boys Central H.S. / Butte, MT) 1928-1929
- UADR 15/152 Folder : McCarthy, Ray (Florida News Service, NY) 1924-1926
- UADR 15/153 Folder : McCarthy, Ray (Florida News Service, NY) 1927-1928
- UADR 15/154 Folder : McCarthy, Ray (Kerr - McCarthy Advertising, Inc.) 1928-1929
- UADR 15/155 Folder : McCarthy, William V. (Ray McCarthy Travel Service) 1928-1929
- UADR 15/156 Folder : McCarthy, William V. (Ray McCarthy Travel Service) 1929
- UADR 15/157 Folder : McCord, Ralph N. (Bloomington, IN and Los Angeles, CA) 1924-1928
- UADR 15/158 Folder : McCormick, H.E. (Bucknell University, Lewisburg, PA) 1924-1929
- UADR 15/159 Folder : McCracken, G. Herbert (Scholastic: A National Magazine for the Schoolroom) 1926-1929
- UADR 15/160 Folder : McCullough, George H. (C and S Sporting Goods Company) 1925-1929
- UADR 15/161 Folder : McDonald, A.A. "Alex" (Saint Paul, MN) 1921-1925
- UADR 15/162 Folder : McDonald, A.A. "Alex" (Saint Paul, MN) 1925-1926
- UADR 15/163 Folder : McDonald, A.A. "Alex" (Saint Paul, MN) 1926-1929
- UADR 15/164 Folder : McDonald, Angus D. (New York, NY) 1921-1924
- UADR 15/165 Folder : McDonald, Angus D. (New York, NY) 1925-1928
- UADR 15/166 Folder : McDonald, Angus D. (New York, NY) 1929
- UADR 15/167 Folder : McDonald, T.E. (Rawlings, WY; Fort Collins, CO) 1924-1929
- UADR 15/168 Folder : McDonaough, Andrew L. (Plainfield, NY) 1922-1927
- UADR 15/169 Folder : McEndarfer, E.R. (Assistant to E.M. Morris) 1927-1928
- UADR 15/170 Folder : McEvoy, J.P. (Woodstock, NY) 1926-1928
- UADR 15/171 Folder : McEwan, John J. "Mac" Captain USA 1925-1928
- UADR 16/01 Folder : McGannon, T. Paul (Albany and New York, NY) 1919-1921
- UADR 16/02 Folder : McGannon, T. Paul (Albany and New York, NY) 1925
- UADR 16/03 Folder : McGannon, T. Paul (Albany and New York, NY) 1927
- UADR 16/04 Folder : McGannon, T. Paul (Albany and New York, NY) 1928
- UADR 16/05 Folder : McGannon, T. Paul (Albany and New York, NY) 1929
- UADR 16/06 Folder : McGauley, Edward J. (Notre Dame Student) 1926-1928
- UADR 16/07 Folder : McGeehan, William O. (NY Herald Tribune) 1928-1929
- UADR 16/08 Folder : McGinn, S.F. (Waterloo, IA) 1927
- UADR 16/09 Folder : McGovern, John T. (Minneapolis Tribune) 1928-1929
- UADR 16/10 Folder : McGraw, John J. (Youngstown, OH) 1926-1927
- UADR 16/11 Folder : McGrath, Chester "Muggsy" (Saint Joseph, MI) 1924-1929
- UADR 16/12 Folder : McGrath, Frank J. (Omaha, NE) 1924-1925
- UADR 16/13 Folder : McGugin, Daniel E. (Vanderbilt Univ, Nashville, TN) 1925-1928
- UADR 16/14 Folder : McGugin, Daniel E. (Vanderbilt Univ, Nashville, TN) 1928-1929
- UADR 16/15 Folder : McGuire, J.E. and T.F. (Chicago, IL) 1926-1927
- UADR 16/16 Folder : McHugh, Edwin C. (Cincinnati, OH) 1927
- UADR 16/17 Folder : McKale, J.F. "Mac" (University of Arizona, Tucson) 1924-1929
- UADR 16/18 Folder : McMahon, H.J. (Saint Louis University, MO) 1925
- UADR 16/19 Folder : McManmon, John V. (Lowell, MA, and Boston College) 1924-1929
- UADR 16/20 Folder : McMillin, Bo (Centernary College - LA, Shreveport, etc) 1924-1926
- UADR 16/21 Folder : McMullen, John M. (Chicago, IL) 1924-1927
- UADR 16/22 Folder : McMullen, John M. (Creighton University, Omaha, NE) 1927-1928
- UADR 16/23 Folder : McMullen, John M. (Chicago, IL) 1929
- UADR 16/24 Folder : McMullin, William L. (Chicago, IL) 1925-1929
- UADR 16/25 Folder : McNally, Vincent (Philadephia, PA) 1925-1929
- UADR 16/26 Folder : McNally, William P. Rev. (Catholic H.S., Philadelphia) 1925
- UADR 16/27 Folder : McNamara, Thomas "Tom" (Denver, CO) 1928