Correspondence
- CBAA 1/06.21 Letter : C. E. McDonnell to Peter A. Baart 1886/0920
- CBAA 1/06.22 Letter : Camillus Paul to Peter A. Baart 1886/0925
- CBAA 1/06.23 Letter : E. D. Kelly to Peter A. Baart 1886/0928
- CBAA 1/06.24 Letter : E. D. Kelly to Peter A. Baart 1886/1001
- CBAA 1/06.25 Letter : Francis S. Belden to Peter A. Baart 1886/1026
- CBAA 1/06.26 Letter : Francis S. Belden to Peter A. Baart 1886/1105
- CBAA 1/06.27 Letter : The Catholic Publication Society to Peter A. Baart 1886/1116
- CBAA 1/06.28 Letter : W. H. Sadlier to Peter A. Baart 1886/1119
- CBAA 1/06.29 Letter : W. H. Sadlier to Peter A. Baart 1886/1120
- CBAA 1/06.30 Letter : The Catholic Publication Society to Peter A. Baart 1886/1120
- CBAA 1/06.31 Letter : Brother Dominic to Peter A. Baart 1886/1121
- CBAA 1/06.32 Letter : J. McLaughlin to Peter A. Baart 1886/1122
- CBAA 1/06.33 Letter : O'Shea's Catholic Publishing House to Peter A. Baart 1886/1125
- CBAA 1/06.34 Letter : Rev. C. H. Borgess to Peter A. Baart 1886/1128
- CBAA 1/06.35 Letter : F. D. Coutes to Peter A. Baart 1886/1129
- CBAA 1/06.36 Letter : Rev. F. A. Winsey to Peter A. Baart 1886/1201
- CBAA 1/06.37 Letter : Sister M. Clotilda to Peter A. Baart 1886/1204
- CBAA 1/06.38 Letter : J. McLaughlin to Peter A. Baart 1886/1207
- CBAA 1/06.39 Letter : A. Reinhart to Peter A. Baart 1886/1210
- CBAA 1/06.40 Letter : Thomas J. Ryan to Peter A. Baart 1886/1213
- CBAA 1/06.41 Letter : Cowperthwait and Co. to Peter A. Baart 1886/1218
- CBAA 1/06.42 Letter : Rev. Charles Reilly to Peter A. Baart 1886/1224
- CBAA 1/07.01 Letter : Francis James Stahl to Peter A. Baart 1887/ 18
- CBAA 1/07.02 Letter : D. Appleton and Co. to Peter A. Baart 1887/0103
- CBAA 1/07.03 Letter : Catholic Publishing Society to Baart [missing 4/1988] 1887/0106
- CBAA 1/07.04 Letter : Sheldow and Company to Peter A. Baart 1887/0108
- CBAA 1/07.05 Letter : Van Antwerp, Bragg, and Co. to Reverend C. G. Bolte 1887/0111
- CBAA 1/07.06 Letter : D. Appleton and Co. to Peter A. Baart 1887/0112
- CBAA 1/07.07 Letter : Clark and Maynard Co. to Peter A. Baart 1887/0115
- CBAA 1/07.08 Letter : Clark and Maynard Co. to Peter A. Baart 1887/0115
- CBAA 1/07.09 Letter : Clark and Maynard Co. to Peter A. Baart 1887/0115
- CBAA 1/07.10 Letter : B. Herder to Peter A. Baart 1887/0115
- CBAA 1/07.11 Letter : Rev. C. G. Bolte to VanAntwerp, Bragg and Co. 1887/0117
- CBAA 1/07.12 Letter : Ivison, Blakeman and Co. to Peter A. Baart 1887/0117
- CBAA 1/07.13 Letter : Francis S. Belden to Peter A. Baart 1887/0118
- CBAA 1/07.14 Letter : Rev. F. A. Wimsey to Peter A. Baart 1887/0118
- CBAA 1/07.15 Letter : J. M. Feldman to Peter A. Baart 1887/0118
- CBAA 1/07.16 Letter : Cowperthwait and Co. to Rev. C. G. Bolte 1887/0118
- CBAA 1/07.17 Letter : Benziger Bros. to Peter A. Baart 1887/0119
- CBAA 1/07.18 Letter : P. F. Cinnaertz to Peter A. Baart 1887/0119
- CBAA 1/07.19 Letter : F. S. Belden to Peter A. Baart 1887/0119
- CBAA 1/07.20 Letter : D. Appleton and Co. to Board of Education 1887/0120
- CBAA 1/07.21 Letter : W.H. Sadlier to Peter A. Baart 1887/0120
- CBAA 1/07.22 Letter : Sheldon and Co. to Board of Education 1887/0120
- CBAA 1/07.23 Letter : The Catholic Publishers Society to Peter A. Baart 1887/0120
- CBAA 1/07.24 Letter : The Catholic Publishers Society to Peter A. Baart 1887/0120
- CBAA 1/07.25 Letter : The Catholic Publishers Society to Peter A. Baart 1887/0120
- CBAA 1/07.26 Letter : The Catholic Publishers Society to Peter A. Baart 1887/0120
- CBAA 1/07.27 Letter : Benziger Bros. to Peter A. Baart 1887/0120
- CBAA 1/07.28 Letter : Benziger Bros. to Peter A. Baart 1887/0120
- CBAA 1/07.29 Letter : Board of Education to Monsignor, Diocese of Detroit 1887/0121
- CBAA 1/07.30 Letter : O'Shea's Catholic Publishing House to Peter A. Baart 1887/0122
- CBAA 1/07.31 Letter : J. H. McLaughlin telegram to Peter A. Baart 1887/0123
- CBAA 1/07.32 Letter : Catholic Publishers Society Co. to Peter A. Baart 1887/0124
- CBAA 1/07.33 Letter : D. Appleton and Co. to Peter A. Baart 1887/0127
- CBAA 1/07.34 Letter : Mother Mary Clotilda to Peter A. Baart 1887/0129
- CBAA 1/07.35 Letter : Clark and Maynard Co. to Peter A. Baart 1887/0131
- CBAA 1/07.36 Letter : C. E. Lane (D. Appleton and Co.) to Peter A. Baart 1887/0131
- CBAA 1/07.37 Letter : W. H. Sadlier to Peter A. Baart 1887/0131
- CBAA 1/07.38 Letter : F. D. Curtis, Sower, Potts and Co. to Peter A. Baart 1887/0203
- CBAA 1/07.39 Letter : Clark and Maynard telegram to Peter A. Baart 1887/0207
- CBAA 1/07.40 Letter : Clark and Maynard to Peter A. Baart 1887/0207
- CBAA 1/07.41 Letter : University Publishing Co. to Peter A. Baart 1887/0207
- CBAA 1/07.42 Letter : C. E. Lane (D. Appleton and Co.) to Peter A. Baart 1887/0131
- CBAA 1/07.43 Letter : A. S. Barnes and Co. to Peter A. Baart 1887/0209
- CBAA 1/07.44 Letter : Bishop to Peter A. Baart 1887/0210
- CBAA 1/07.45 Letter : A. S. Barnes and Co. to Peter A. Baart 1887/0212
- CBAA 1/07.46 Letter : F. F. Hoaglin to Peter A. Baart 1887/0215
- CBAA 1/07.47 Letter : Perry Mayo to Peter A. Baart 1887/0215
- CBAA 1/07.48 Letter : W. H. Hughes to Peter A. Baart 1887/0218
- CBAA 1/07.49 Letter : F. F. Hoaglin to Peter A. Baart 1887/0218
- CBAA 1/07.50 Letter : Bernard O'Reilly to Peter A. Baart 1887/0219
- CBAA 1/07.51 Letter : Mother M. Clotilda to Peter A. Baart 1887/0220
- CBAA 1/07.52 Letter : F. F. Hoaglin to Peter A. Baart 1887/0221
- CBAA 1/07.53 Letter : Mary Cecilia Wuerth to Peter A. Baart 1887/0222
- CBAA 1/07.54 Letter : A. S. Barnes and Co. to Peter A. Baart 1887/0222
- CBAA 1/07.55 Letter : Bernard O'Reilly to Peter A. Baart 1887/0225
- CBAA 1/07.56 Letter : James Halton to Peter A. Baart 1887/0225
- CBAA 1/07.57 Letter : Wm. Considine to Peter A. Baart 1887/0228
- CBAA 1/08.01 Letter : Rev. C. H. Borgess to Catholic Publishing House 1887/0305
- CBAA 1/08.02 Letter : Mother Clotilda to Peter A. Baart 1887/0307
- CBAA 1/08.03 Letter : Ierson, Blakeman and Co. to Peter A. Baart 1887/0311
- CBAA 1/08.04 Letter : University Publishing Co. to Peter A. Baart 1887/0312
- CBAA 1/08.05 Letter : A. S. Barnes and Co. to Peter A. Baart 1887/0312
- CBAA 1/08.06 Letter : John Murphy and Co. to Peter A. Baart 1887/0313
- CBAA 1/08.07 Letter : A. S. Barnes and Co. to Peter A. Baart 1887/0318
- CBAA 1/08.08 Letter : William H. Sadlier to Peter A. Baart 1887/0319
- CBAA 1/08.09 Letter : John Murphy and Co. to Peter A. Baart 1887/0319
- CBAA 1/08.10 Letter : Clark and Maynard to Peter A. Baart 1887/0319
- CBAA 1/08.11 Letter : F. D. Curtis, Sower, Potts, and Co. to Peter A. Baart 1887/0319
- CBAA 1/08.12 Letter : Mary Hayes to Peter A. Baart 1887/0319
- CBAA 1/08.13 Letter : Lawrence Kehoe, Catholic Publishing to Peter A. Baart 1887/0319
- CBAA 1/08.14 Letter : Agnes McPeake to Peter A. Baart 1887/0320
- CBAA 1/08.15 Letter : W. J. Button, Harper and Bros. to Peter A. Baart 1887/0321
- CBAA 1/08.16 Letter : H. H. Meuffels to Peter A. Baart 1887/0324
- CBAA 1/08.17 Letter : C. H. Borgess to Peter A. Baart 1887/0326
- CBAA 1/08.18 Letter : C. H. Borgess to Peter A. Baart 1887/0329
- CBAA 1/08.19 Letter : Lena Flanders to Peter A. Baart 1887/0330
- CBAA 1/08.20 Letter : Sebastian Beck to Peter A. Baart 1887/0331
- CBAA 1/08.21 Letter : Kate O'Laughlin to Peter A. Baart 1887/0402