- UPEL 64/06 Letter : John M. Morris to AM 1898/0209
- UPEL 64/06 Letter : Jennie M. Ninnemann to AM 1898/0209
- UPEL 64/06 Letter : Thomas H. Mullay to AM 1898/0209
- UPEL 64/06 Letter : Charles L. Mosher / Guardian Trust Company to AM; regarding Francis Mooney 1898/0209
- UPEL 64/06 Letter : D.H. McBride to AM 1898/0212
- UPEL 64/06 Letter : Beulah S. Moseley / The Rome Georgian to AM 1898/0214
- UPEL 64/06 Letter : Robert Thorne Newberry to President UND 1898/0218
- UPEL 64/06 Letter : Dillon E. Mapother to Rev. Dear Father 1898/0221
- UPEL 64/06 Letter : A. Morrissey to James D. Murphy 1898/0226
- UPEL 64/06 Letter : William T. Mug to AM 1898/0227
- UPEL 64/07 Letter : James D. Murphy to AM 1898/0302
- UPEL 64/07 Letter : Charles L. Mosher / Guardian Trust Company to AM; regarding Francis Mooney 1898/0303
- UPEL 64/07 Letter : Dillon E. Mapother to AM 1898/0303
- UPEL 64/07 Letter : B.B. Metcalf to My dear Father 1898/0303
- UPEL 64/07 Letter : Frank J. Moon to Gentleman 1898/0307
- UPEL 64/07 Letter : T.E. Murphy / College of St. Francis Xavier to Father Reverend President; regarding Thomas J. Murphy 1898/0308
- UPEL 64/07 Letter : Brother Charles / De La Salle Institute to Whom it May Concern; regarding Thomas Murphy 1898/0308
- UPEL 64/07 Letter : N.N. McKinnon to AM; regarding Thomas Murphy 1898/0308
- UPEL 64/07 Letter : The Cathedral Library Association of New York to AM 1898/0310
- UPEL 64/07 Letter : A.S.J. Magruder to Brother Paul Hermit 1898/0310
- UPEL 64/07 Letter : Mary Morrissey to AM 1898/0311
- UPEL 64/07 Letter : E. McLernon to AM 1898/0312
- UPEL 64/07 Letter : Mrs. J.M. Ninnemann to AM 1898/0315
- UPEL 64/07 Letter : A. McNulty to AM; regarding John Willey Willis, McNulty recommends Willis for an Honorary Degree by Notre Dame 1898/0316
- UPEL 64/07 Letter : Mrs. John Meagher to AM 1898/0317
- UPEL 64/07 Letter : The Cathedral Library Association of New York to AM 1898/0317
- UPEL 64/07 Letter : T.D. Mott Jr. to AM 1898/0319
- UPEL 64/07 Letter : Mary Morrissey to AM 1898/0321
- UPEL 64/07 Letter : A. McNulty to AM; regarding John Willey Willis 1898/0322
- UPEL 64/07 Letter : L. Griskin [?] to AM 1898/0322
- UPEL 64/07 Letter : Agustin Villanueva to Rev. F. Walsh 1898/0327
- UPEL 64/08 Letter : The MacMillan Company to President UND 1898/0415
- UPEL 64/08 Letter : Mrs. W.F.N. Davis to AM; regarding Milton McMahon 1898/0418
- UPEL 64/08 Letter : Frank Mooney to Dear Sir 1898/0424
- UPEL 64/08 Letter : T.D. Mott Jr. to AM 1898/0425
- UPEL 64/08 Letter : Mrs. McGeeney to AM 1898/0425
- UPEL 64/08 Letter : Mrs. Anna E. Morris to AM 1898/0426
- UPEL 64/08 Letter : Charles L. Mosher / The Guardian Trust Company to AM 1898/0426
- UPEL 64/08 Letter : John M. Morris to AM 1898/0426
- UPEL 64/08 Letter : Mrs. C.E. McSheehy to AM 1898/0427
- UPEL 64/08 Letter : John M. Morris to AM 1898/0428
- UPEL 64/08 Letter : Brother James to Dear Brother 1898/0430
- UPEL 64/08 Letter : J. McGinnis to AM 1898/0430
- UPEL 64/09 Letter : J.H. Mulligan to AM 1898/0501
- UPEL 64/09 Letter : E. McLernon to AM 1898/0502
- UPEL 64/09 Letter : Jennie Maher to AM 1898/0502
- UPEL 64/09 Letter : Anna Miller to AM 1898/0502
- UPEL 64/09 Letter : D. Mulcahy to Very Rev. Father 1898/0503
- UPEL 64/09 Letter : John Meagher to AM 1898/0505
- UPEL 64/09 Letter : Hugh C. Mitchell to AM 1898/0508
- UPEL 64/09 Letter : F.A. Metcalf to AM 1898/0509
- UPEL 64/09 Letter : Edward J. Maginnis to AM 1898/0510
- UPEL 64/09 Letter : John Meagher to AM 1898/0512
- UPEL 64/09 Letter : D.H. McBride and Company to Sister M. Aloysius 1898/0513
- UPEL 64/09 Letter : Papa [D.A. Morrison] to Don 1898/0514
- UPEL 64/09 Letter : John D. McGee to AM 1898/0517
- UPEL 64/09 Letter : P.T. O'Sullivan to AM; regarding Nix 1898/0518
- UPEL 64/09 Letter : Hugh O'Gara McShane to AM 1898/0518
- UPEL 64/09 Letter : John McGrath to AM; regarding M. Lucy 1898/0518
- UPEL 64/10 Letter : Hugh C. Mitchell to AM 1898/0520
- UPEL 64/10 Letter : Mrs. F.J. Moon to AM 1898/0520
- UPEL 64/10 Letter : E. Meehan to AM 1898/0520
- UPEL 64/10 Letter : Hugh O'Gara McShane to AM 1898/0520
- UPEL 64/10 Letter : J.Z. Miller to AM 1898/0521
- UPEL 64/10 Letter : John M. Morris to AM 1898/0523
- UPEL 64/10 Letter : A.B. McDonell to My Dear Son Alex 1898/0523
- UPEL 64/10 Letter : Patrick Murphy to AM 1898/0524
- UPEL 64/10 Letter : Charles L. Mosher / Guardian Trust Company to AM; regarding Francis Mooney 1898/0525
- UPEL 64/10 Letter : James D. Murphy to AM 1898/0526
- UPEL 64/10 Letter : D.H. McBride to AM 1898/0526
- UPEL 64/10 Letter : George McCracken to AM 1898/0527
- UPEL 64/10 Letter : George E. McLean to Dear Sir 1898/0528
- UPEL 64/10 Letter : Sister M. Pauline to Brother Paul Hermit 1898/0528
- UPEL 64/10 Letter : Pat Monahan to AM 1898/0530
- UPEL 64/10 Letter : P. Mulcrone to AM 1898/0530
- UPEL 64/10 Letter : H.T. McCollum to AM 1898/0530
- UPEL 64/10 Letter : D.A. Morrison to AM 1898/0531
- UPEL 64/10 Letter : P.A. Murray to AM 1898/0531
- UPEL 64/11 Letter : T.D. Mott Jr. to AM 1898/0601
- UPEL 64/11 Letter : John Meagher to AM 1898/0601
- UPEL 64/11 Letter : D.H. McBride and Company to AM 1898/0601
- UPEL 64/11 Letter : W.G. McMoskey to Rev. and Dear Fathers 1898/0605
- UPEL 64/11 Letter : Uncle George [P. Braun?] to My Dear Nephew [Noonan] 1898/0606
- UPEL 64/11 Letter : John M. Morris to AM 1898/0606
- UPEL 64/11 Letter : James Morgan to AM 1898/0607
- UPEL 64/11 Letter : James D. Murphy to AM 1898/0610
- UPEL 64/11 Letter : Charles L. Mosher / The Guardian Trust Company to AM 1898/0610
- UPEL 64/11 Letter : John M. Morris to AM 1898/0610
- UPEL 64/11 Letter : Mary McSorley to AM 1898/0610
- UPEL 64/11 Letter : Mrs. Thomas McGuire to AM 1898/0610
- UPEL 64/11 Letter : James Murphy to Rev. Father 1898/0611
- UPEL 64/11 Letter : W. Musser to AM 1898/0611
- UPEL 64/11 Letter : Jennie M. Ninnemann to AM 1898/0611
- UPEL 64/11 Letter : P. Mulcrone to AM 1898/0613
- UPEL 64/11 Letter : Nicholas Michels to Dear Sir 1898/0613
- UPEL 64/11 Letter : Thomas Maginnis to UND 1898/0613
- UPEL 64/11 Letter : Mrs. J.B. Murphy to AM 1898/0613
- UPEL 64/11 Letter : T.J. McDonnell to AM 1898/0613
- UPEL 64/11 Letter : J.Z. Miller to AM 1898/0613
- UPEL 64/12 Letter : E. McLernon to AM 1898/0614