- UPEL 64/24 Letter : James McNally to AM; regarding John Donovan 1898/1116
- UPEL 64/24 Letter : Peter Manderfeld to AM 1898/1119
- UPEL 64/24 Letter : D.D. Myers to AM 1898/1119
- UPEL 64/24 Letter : A. McMahon to AM 1898/1120
- UPEL 64/24 Letter : J. Miksak to Dear Eman 1898/1121
- UPEL 64/24 Letter : E.J. Monaghan to AM 1898/1122
- UPEL 64/24 Letter : Ed McElray to AM 1898/1123
- UPEL 64/24 Letter : Kate McLaughlin to AM 1898/1123
- UPEL 64/24 Letter : Thomas J. McCaffrey to AM 1898/1123
- UPEL 64/24 Letter : M. Monarch [?] to AM 1898/1125
- UPEL 64/24 Letter : H.F. McKeever to AM 1898/1125
- UPEL 64/24 Letter : Ed McCarthy to AM 1898/1126
- UPEL 64/24 Letter : AM to E.J. Monahan [Draft] 1898/1126
- UPEL 64/24 Letter : Thomas F. Murphy to AM 1898/1128
- UPEL 64/24 Letter : George McGuire to Dear Sir 1898/1130
- UPEL 64/24 Letter : Henry Mueller to AM 1898/1130
- UPEL 64/25 Letter : C.A. Malone to AM 1898/1201
- UPEL 64/25 Letter : F.F. McIver to AM 1898/1201
- UPEL 64/25 Letter : C.A. McNutt to AM 1898/1202
- UPEL 64/25 Letter : George McGuire to AM 1898/1203
- UPEL 64/25 Letter : James D. Murphy to AM 1898/1204
- UPEL 64/25 Letter : C.V. McAdams to My Dear Sir 1898/1208
- UPEL 64/25 Letter : Mrs. McGeeney to AM 1898/1209
- UPEL 64/25 Letter : John H. McNamara to AM; regarding Insurance for University 1898/1209
- UPEL 64/25 Letter : John M. Morris to AM 1898/1210
- UPEL 64/25 Letter : P. Mulcrone to AM 1898/1210
- UPEL 64/25 Letter : R.L. McWilliams to Dear Sirs 1898/1212
- UPEL 64/25 Letter : John Moffitt to Dear Sister 1898/1212
- UPEL 64/25 Letter : Henry Mueller to AM 1898/1213
- UPEL 64/25 Letter : C.V. McAdams to AM 1898/1213
- UPEL 64/25 Letter : E.C. Morrissey to AM 1898/1214
- UPEL 64/25 Letter : Henry Mueller to AM 1898/1214
- UPEL 64/25 Letter : George H. Madden to AM 1898/1214
- UPEL 64/26 Letter : George F. Tasche and Theo Hartmann / Merchants Despatch Company to Professor Paradis 1898/1215
- UPEL 64/26 Letter : C.V. McAdams to UND 1898/1215
- UPEL 64/26 Letter : Eliza McIntyre to Brother Cajetan 1898/1215
- UPEL 64/26 Letter : C.V. McAdams to AM 1898/1216
- UPEL 64/26 Letter : Kate to My Dear Brother [J.E. McLaughlin] 1898/1218
- UPEL 64/26 Letter : Isaac Murphy to AM 1898/1219
- UPEL 64/26 Letter : C.A. Malone to AM 1898/1224
- UPEL 64/26 Letter : Henry Morris to AM 1898/1224
- UPEL 64/26 Letter : William F. Montavon to Brother Edward 1898/1227
- UPEL 64/26 Letter : Daniel J. McCarthy to Brother Paul Hermit 1898/1227
- UPEL 64/26 Letter : Frank A. Moore to AM 1898/1228
- UPEL 64/26 Letter : Andrew Nicholl to AM 1898/1228
- UPEL 64/26 Letter : C. Nast to Secretary of Notre Dame 1898/1230
- UPEL 64/26 Letter : Patrick Murphy to AM 1898/1231
- UPEL 64/27 Letter : C.A. Malone to AM 1899/0101
- UPEL 64/27 Letter : Alonzo H.B. Nacy to AM 1899/0101
- UPEL 64/27 Letter : Maria S. Murray to AM 1899/0102
- UPEL 64/27 Letter : E.C. Morrissey to AM 1899/0102
- UPEL 64/27 Letter : John M. Morris to AM 1899/0103
- UPEL 64/27 Letter : Adeline J. Moriarty to AM 1899/0104
- UPEL 64/27 Letter : C.A. Malone to AM 1899/0104
- UPEL 64/27 Letter : Ben Newman to AM 1899/0107
- UPEL 64/28 Letter : C. Nast to [?] no date
- UPEL 64/28 Letter : Memorial for William Corby by the Notre Dame University Association of Chicago no date
- UPEL 64/28 Letter : James McNally to [?, incomplete] no date
- UPEL 64/28 Letter : F.F. McIver to Dear Francis no date
- UPEL 64/28 Letter : Grades for E. McConn no date
- UPEL 64/28 Letter : Mrs. Alexander Moore to [?, incomplete] no date
- UPEL 64/28 Letter : Nancy Maxcy to AM no date
- UPEL 65/01 Letter : E.M. Peters to AM 1897/0912
- UPEL 65/01 Letter : Mrs. J. Quinlan to AM 1897/0922
- UPEL 65/01 Letter : Alice Rollins to AM 1897/1202
- UPEL 65/01 Letter : Henry J. Rahe to AM 1897/1204
- UPEL 65/01 Letter : S. Scharlin and Son to AM 1897/1206
- UPEL 65/01 Letter : Sam Spalding to AM 1897/1207
- UPEL 65/01 Letter : R.J. Sadlier to AM 1897/1208
- UPEL 65/01 Letter : M. Gavin to Brother Paul Hermit; regarding Sullivan 1897/1209
- UPEL 65/01 Letter : H. Perrin to Mon Reverend Pere 1897/1210
- UPEL 65/01 Letter : Otto Sauer to AM 1897/1211
- UPEL 65/01 Letter : Mr. and Mrs. J.V. Petritz to AM 1897/1212
- UPEL 65/01 Letter : Jacob Schermerhorn to AM 1897/1213
- UPEL 65/01 Letter : H.S. Simpson to AM 1897/1214
- UPEL 65/01 Letter : Charles A. Strong to AM 1897/1215
- UPEL 65/01 Letter : Mrs. Otto Sauer to AM 1897/1216
- UPEL 65/01 Letter : S.S. Spencer to Dear Sir 1897/1217
- UPEL 65/01 Letter : M. Gavin to Brother Paul Hermit; regarding Sullivan 1897/1217
- UPEL 65/01 Letter : C.W. Fairbanks to UND Library; regarding the Official Gazette of the United States Patent Office 1897/1218
- UPEL 65/01 Letter : Jerry C. Smith to Jerry B. Smith 1897/1220
- UPEL 65/01 Letter : John Sheppard to AM 1897/1220
- UPEL 65/01 Letter : Mrs. J. Quinlan to AM 1897/1220
- UPEL 65/01 Letter : Celeste Pim to AM 1897/1220
- UPEL 65/01 Letter : R.D. Spalding to AM 1897/1221
- UPEL 65/01 Letter : W.J. Quinlan to AM 1897/1221
- UPEL 65/02 Letter : The Sisters of the Precious Blood to Very Reverend Father 1897/1222
- UPEL 65/02 Letter : J.D. Ryan to AM 1897/1222
- UPEL 65/02 Letter : W.D. Page to Brother Paul Hermit 1897/1224
- UPEL 65/02 Letter : S.S. Semmes to AM 1897/1224
- UPEL 65/02 Letter : The Sisters Adorers of the Precious Blood to ? 1897/1225
- UPEL 65/02 Letter : M.E. Schoonover to AM 1897/1228
- UPEL 65/02 Letter : Maria Rhodius to AM; regarding Father Corby 1897/1229
- UPEL 65/02 Letter : Thomas B. Reilly to AM 1897/1229
- UPEL 65/02 Letter : O.H. Palmer to Father Maher, regarding Fr. Corby 1897/1229
- UPEL 65/02 Letter : Charles Schmeykor [?] to AM 1897/1229
- UPEL 65/02 Letter : George Rathz to AM; regarding Father Corby 1897/1229
- UPEL 65/02 Letter : Thomas Scully to AM 1897/1229
- UPEL 65/02 Letter : R.M. Smock / Department of Indiana Grand Army of the Republic to William A. Olmsted; regarding Fr. Corby 1897/1229
- UPEL 65/02 Letter : J.M. Studebaker to AM; regarding Fr. Corby 1897/1229