Letters to Archbishop John Carroll
- MABA 3.05/V.01 Correspondent : O'Brien, Rev. Matthew, 3p. 1804/0102
- MABA 3.05/V.02 Correspondent : O'Brien, Rev. Matthew, 3p. 1805/0107
- MABA 3.05/V.03 Correspondent : O'Brien, Rev. Matthew, 1p. 1805/0108
- MABA 3.05/V.04 Correspondent : O'Brien, Rev. Matthew, 2p. 1805/0219
- MABA 3.05/V.05 Correspondent : O'Brien, Rev. Matthew, 2p. 1805/0310
- MABA 3.05/V.06 Correspondent : O'Brien, Rev. Matthew, 3p. 1805/0804
- MABA 3.05/V.07 Correspondent : O'Brien, Rev. Matthew, 2p. 1809/0107
- MABA 3.05/V.08 Correspondent : O'Brien, Rev. Matthew, 1p. 1812/0916
- MABA 3.05/V.09 Correspondent : O'Brien, Rev. Matthew, 3p. 1812/1019
- MABA 3.05/V.10 Correspondent : O'Brien, Rev. Matthew, 2p. 1813/0105
- MABA 3.05/V.11 Correspondent : O'Brien, Rev. Matthew, 3p. 1814/0505
- MABA 3.05/W Folder : Letters to Abp. Carroll from: Rev. William O'Brien
- MABA 3.05/W.01 Correspondent : O'Brien, Rev. William, 3p. 1808/1116
- MABA 3.05/W.02 Correspondent : O'Brien, Rev. William, 2p. 1809/0302
- MABA 3.05/W.03 Correspondent : O'Brien, Rev. William, 2p. 1809/1116
- MABA 3.05/W.04 Correspondent : O'Brien, Rev. William, 2p. 1810/0113
- MABA 3.05/W.05 Correspondent : O'Brien, Rev. William, 1p. 1811/0529
- MABA 3.05/W.06 Correspondent : O'Brien, Rev. William, 1p. 1811/1114
- MABA 3.05/W.07 Correspondent : O'Brien, Rev. William, 3p. 1812/0917
- MABA 3.05/W.08 Correspondent : O'Brien, Rev. William, 2p. 1814/0301
- MABA 3.05/W.09 Correspondent : O'Brien, Rev. William, 3p. 1815/0222
- MABA 3.05/W.10 Correspondent : O'Brien, Rev. William, 2p. 1815/0904
- MABA 3.05/Y Folder : Letters to Abp. Carroll from: O'Donoghue - Oellers
- MABA 3.05/Y.01 Correspondent : O'Donoghue, Morgan, 3p. 1811/0226
- MABA 3.05/Y.02 Correspondent : O'Dwyer, Rev. Jeremiah 1797/1230
- MABA 3.05/Y.03 Correspondent : Oellers, James, 2p. 1789/1027
- MABA 3.05/Y.04 Correspondent : Oellers, James, 2p. 1801/1011
- MABA 3.05/Y.05 Correspondent : Oellers, James, 2p. 1801/1231
- MABA 3.05/Y.06 Correspondent : Oellers, James, 1p. 1805/1204
- MABA 3.05/Y.07 Correspondent : Oellers, James, 3p.+2p. 1806/0827
- MABA 3.05/Y.08 Correspondent : Oellers, James, 3p.+1p. 1806/0828
- MABA 3.05/Y.09 Correspondent : Oellers, James, 4p. 1806/0908
- MABA 3.05/Y.10 Correspondent : Oellers, James, 3p. 1807/0114
- MABA 4.06/A Folder : Letters to Abp. Carroll from: O'Connor - Olivier
- MABA 4.06/A.01 Correspondent : O'Connor, Charles 1804/0728
- MABA 4.06/A.02 Correspondent : Ogdeu, Rev., 1p. 1796/0322
- MABA 4.06/A.03 Correspondent : O'Kelly, Matthew, 1p. 1806/1007
- MABA 4.06/A.04 Correspondent : O'Kelly, Matthew, 2p. 1808/0101
- MABA 4.06/A.05 Correspondent : O'Kelly, Matthew, 3p. 1808/0102
- MABA 4.06/A.06 Correspondent : O'Kelly, Matthew, 1p. 1808/0102
- MABA 4.06/A.07 Correspondent : O'Kelly, Matthew, 2p. 1808/0113
- MABA 4.06/A.08 Correspondent : Olivier, Rev. Donatien, 4p. 1801/0816
- MABA 4.06/A.09 Correspondent : Olivier, Rev. Donatien, 2p. 1802/1220
- MABA 4.06/A.10 Correspondent : Olivier, Rev. Jean, 3p. 1804/0912
- MABA 4.06/A.11 Correspondent : Olivier, Rev. Jean, 3p. 1805/1202
- MABA 4.06/A.12 Correspondent : Olivier, Rev. Jean, 4p. 1809/1015
- MABA 4.06/A.13 Correspondent : Olivier, Rev. Jean, 4p. 1810
- MABA 4.06/A.14 Correspondent : Olivier, Rev. Jean, 2p. 1810/0115
- MABA 4.06/A.15 Correspondent : Olivier, Rev. Jean, 2p.+1p. 1813/1206
- MABA 4.06/A.16 Correspondent : Olivier, Rev. Jean, 1p.
- MABA 4.06/B Folder : Letters to Abp. Carroll from: Olivier
- MABA 4.06/B.01 Correspondent : Olivier, Rev. Donatien, 3p. 1799/0422
- MABA 4.06/B.02 Correspondent : Olivier, Rev. Donatien, 4p. 1799/0520
- MABA 4.06/B.03 Correspondent : Olivier, Rev. Donatien, 3p. 1801/0928
- MABA 4.06/B.04 Correspondent : Olivier, Rev. Donatien, 4p. 1802/0118
- MABA 4.06/B.05 Correspondent : Olivier, Rev. Donatien, 4p. 1803/1010
- MABA 4.06/B.06 Correspondent : Olivier, Rev. Donatien, 3p. 1805/0420
- MABA 4.06/B.07 Correspondent : Olivier, Rev. Donatien, 3p. 1806/0108
- MABA 4.06/B.08 Correspondent : Olivier, Rev. Jean, 2p. 1806/1217
- MABA 4.06/B.09 Correspondent : Olivier, Rev. Jean, 4p. 1807/0209
- MABA 4.06/B.10 Correspondent : Olivier, Rev. Jean, 2p. 1809/0701
- MABA 4.06/B.11 Correspondent : Olivier, Rev. Jean, 2p. 1809/0726
- MABA 4.06/B.12 Correspondent : Olivier, Rev. Jean, 1p. 1811/0402
- MABA 4.06/B.13 Correspondent : Olivier, Rev. Jean, 3p. 1811/1008
- MABA 4.06/B.14 Correspondent : Olivier, Rev. Jean, 2p. 1812/0202
- MABA 4.06/B.15 Correspondent : Olivier, Rev. Jean, 3p. 1812/0220
- MABA 4.06/C Folder : Letters to Abp. Carroll from: Olivier - Owing
- MABA 4.06/C.01 Correspondent : Olivier, Soeur Marie
- MABA 4.06/C.02 Correspondent : Olivier, Soeur Marie, 1p. 1810/1225
- MABA 4.06/C.03 Correspondent : Olivier, Soeur Marie, 8p. 1811/0802
- MABA 4.06/C.04 Correspondent : Olivier, Soeur Marie, 5p. 1811/1016
- MABA 4.06/C.05 Correspondent : Olivier, Soeur Marie, 3p. 1812/0212
- MABA 4.06/C.06 Correspondent : Olivier, Soeur Marie, 5p. ????/??24
- MABA 4.06/C.07 Correspondent : O'Mara, R., 1p. (missing) 1804/0531
- MABA 4.06/C.08 Correspondent : O'Neill, Rev. Arthur, 2p. 1809/07
- MABA 4.06/C.09 Correspondent : Orbison, Mr. William, 2p. 1811/0914
- MABA 4.06/C.10 Correspondent : Orbison, Mr. William, 2p. 1814/1028
- MABA 4.06/C.11 Correspondent : O'Reilly, Abj. Richard, 2p. 1796/1215
- MABA 4.06/C.12 Correspondent : Owing, Aloysius, 1p. 1804/0204
- MABA 4.06/D Folder : Letters to Abp. Carroll from: Paff - Pasquet
- MABA 4.06/D.01 Correspondent : Paff, John Michael, 1p. 1808/0820
- MABA 4.06/D.02 Correspondent : Pareti, Dominico, 1p. 1809/0501
- MABA 4.06/D.03 Correspondent : Pasquet, William, 2p. 1805/0813
- MABA 4.06/D.04 Correspondent : Pasquet, William, 3p. 1805/0909
- MABA 4.06/D.05 Correspondent : Pasquet, William, 3p. 1807/0303
- MABA 4.06/D.06 Correspondent : Pasquet, William, 3p. 1809/0105
- MABA 4.06/D.07 Correspondent : Pasquet, William, 3p. 1810/0520
- MABA 4.06/D.08 Correspondent : Pasquet, William, 4p. 1811/02
- MABA 4.06/D.09 Correspondent : Pasquet, William, 3p. 1811/0525
- MABA 4.06/D.10 Correspondent : Pasquet, William, 1p.+1p. 1811/0723
- MABA 4.06/E Folder : Letters to Abp. Carroll from: William Pasquet
- MABA 4.06/E.01 Correspondent : Pasquet, William, 1p. 1811/1208
- MABA 4.06/E.02 Correspondent : Pasquet, William, 1p.+2p. (reply) 1811/1214
- MABA 4.06/E.03 Correspondent : Pasquet, William, 2p. 1812/0323
- MABA 4.06/E.04 Correspondent : Pasquet, William, 3p. 1812/0804
- MABA 4.06/E.05 Correspondent : Pasquet, William, 1p. 1814/0118
- MABA 4.06/E.06 Correspondent : Pasquet, William, 3p. 1814/0618
- MABA 4.06/E.07 Correspondent : Pasquet, William, 3p. 1814/0323
- MABA 4.06/E.08 Correspondent : Pasquet, William, 2p. 1814/0414
- MABA 4.06/E.09 Correspondent : Pasquet, William, 2p. 1814/0502