- MLEO 4/092 Author : Leopoldine Society 1829/1102
- MLEO 4/093 Author : Leo XII (Pope-Rome) 1829/0130
- MLEO 4/093 Recipient : Leopoldine Society 1829/0130
- MLEO 4/094 Author : Hohenwart (Imperial Court Chancery-Vienna) 1829/0312
- MLEO 4/094 Recipient : Leopoldine Society 1829/0312
- MLEO 4/095 Author : Wagner, Kasper (Leopoldine Society) 1829/0317
- MLEO 4/095 Recipient : Franz I (Emperor of Austria) 1829/0317
- MLEO 4/096 Author : Franz I (Emperor of Austria) 1829/0414
- MLEO 4/096 Recipient : Imperial Court Chancery (Vienna) 1829/0414
- MLEO 4/097 Author : Franz I (Emperor of Austria) 1828/1203
- MLEO 4/097 Recipient : von Saurau (Count-Imperial Chancellor-Vienna) 1828/1203
- MLEO 4/098 Document : Statistics of the Dioceses of the Austrican Empire nd
- MLEO 4/098 Author : Leopoldine Society nd
- MLEO 4/099 Document : Notes on Distributions of LS Mission Reports 1834/0428
- MLEO 4/099 Author : Lichtenberg, Karl Anton (Father-LS Secretary) 1834/0428
- MLEO 4/100 Document : Number of Copies of Various Documents nd
- MLEO 4/100 Author : Leopoldine Society nd
- MLEO 4/101 Author : Milde, Vincent Eduard (Archbishop of Vienna) 1852/0501
- MLEO 4/101 Recipient : Stoeger, Leopold (Director-Chancery of Vienna) 1852/0501
- MLEO 4/102 Author : Leopoldine Society Board of Directors 1834/0817
- MLEO 4/102 Recipient : Chancery of Vienna 1834/0817
- MLEO 4/103 Author : Chancery of Vienna 1834/0817
- MLEO 4/103 Recipient : Leopoldine Society (Secretary-Accountant) 1834/0817
- MLEO 4/104 Author : Chancery of Vienna 1832/0114
- MLEO 4/104 Recipient : Imperial Court Chancery (Vienna) 1832/0114
- MLEO 4/105 Document : List of Members of Board of Directors nd
- MLEO 4/105 Author : Leopoldine Society Board of Directors nd
- MLEO 4/106 Document : Notes Concerning LS Internal Affairs and Unity 1855-1859
- MLEO 4/106 Author : Leopoldine Society 1857/0821
- MLEO 4/107 Author : Baeumker, Franz (Dr-Francis Xavier Society-Aachen) 1939/0703
- MLEO 4/107 Recipient : Thauren, Johannes (Professor-St.Gabriel-Vienna) 1939/0703
- MLEO 4/108 Author : Baeumker, Franz (Dr-Francis Xavier Society-Aachen) 1939/0605
- MLEO 4/108 Recipient : Thauren, Johannes (Dr-Missional Institution-Vienna) 1939/0605
- MLEO 4/109 Author : Baeumker, Franz (Dr-Francis Xavier Society-Aachen) 1939/0621
- MLEO 4/109 Recipient : Thauren, Johannes (Dr-Missional Institution-Vienna) 1939/0621
- MLEO 4/110 Author : Kenrick, Francis Patrick (Archbishop of Baltimore) 1852/0519
- MLEO 4/110 Author : L'homme, Promo. (Father) 1852/0519
- MLEO 4/110 Recipient : Milde, Vincent Eduard (Archbishop of Vienna) 1852/0519
- MLEO 4/111 Document : Newspaper Article of Carinthia Concerning LS History 1834/0118
- MLEO 5/001 Document : Bookkeeping (Expenses in 1832) 1832
- MLEO 5/001 Author : Leopoldine Society 1832
- MLEO 5/002 Document : List of Donations and Recipients 1839/0301
- MLEO 5/002 Author : Leopoldine Society 1839/0301
- MLEO 5/003 Document : List of Donations of Church & Religious Items nd
- MLEO 5/003 Author : Leopoldine Society nd
- MLEO 5/003 Subject : Viszoczky, Andreas (Father-Missionary) nd
- MLEO 5/004 Author : Raffeiner, John Stephen (Father-New York-in Austria) 1844/0321
- MLEO 5/004 Recipient : Milde, Vincent Eduard (Archbishop of Vienna) 1844/0321
- MLEO 5/005 Author : Viszoczky, Andreas (Father-Chaplain-Kasmark, Hungary) 1831/0423
- MLEO 5/005 Recipient : Milde, Vincent Eduard (Archbishop of Vienna) 1831/0423
- MLEO 5/006 Author : Fenwick, Benedict Joseph (Bishop of Boston) 1840/0919
- MLEO 5/006 Recipient : Milde, Vincent Eduard (Archbishop of Vienna) 1840/0919
- MLEO 5/007 Author : Milde, Vincent Eduard (Archbishop of Vienna) 1841/12
- MLEO 5/007 Recipient : Ferdinand I (Emperor of Austria) 1841/12
- MLEO 5/008 Author : Badin, Francis Vincent (Fr-Vicar General of Detroit) 1833/0628
- MLEO 5/008 Author : Kundig, Martin (Father-Pastor) 1833/0628
- MLEO 5/008 Recipient : Ferdinand I (Emperor of Austria) 1833/0628
- MLEO 5/009 Author : von Lederer, Karl Friedrich W. (Father-Gen. Consul-NY) 1833/1101
- MLEO 5/009 Recipient : Lichtenberg, Karl Anton (Fr-Secretary-LS Business Mgr) 1833/1101
- MLEO 5/010 Author : Neumann, John Nepomucene (Father,CSsR-Philadelphia) 1841/0504
- MLEO 5/010 Recipient : Milde, Vincent Eduard (Archbishop of Vienna) 1841/0504
- MLEO 5/011 Author : Raffeiner, John Stephen (Father-New York) 1833/03
- MLEO 5/011 Recipient : Chancery of Brixen 1833/03
- MLEO 5/012 Author : Passerath, Joseph (Father,CSsR-Superior-Vienna) 1834/0204
- MLEO 5/012 Recipient : Leopoldine Society Board of Directors 1834/0204
- MLEO 5/013 Author : von Huelsmann (Legations Secretary?) 1841/0930
- MLEO 5/013 Recipient : von Marschall (Baron-German Delegate-Washington, DC) 1841/0930
- MLEO 5/014 Author : Arnstein and Eskeles (Bankers-Vienna) 1838/0626
- MLEO 5/014 Recipient : Leopoldine Society Board of Directors 1838/0626
- MLEO 5/015 Author : Arnstein and Eskeles (Bankers-Vienna) 1838/1003
- MLEO 5/015 Recipient : Leopoldine Society Board of Directors 1838/1003
- MLEO 5/016 Author : Chancery of Gratz 1838/0731
- MLEO 5/016 Recipient : Leopoldine Society Board of Directors 1838/0731
- MLEO 5/017 Author : Pichler, S. (Chancellor-Chancery of Salzburg) 1838/0414
- MLEO 5/017 Recipient : Chancery of Vienna 1838/0414
- MLEO 5/018 Author : Geith, Johann (Father-President-Chancery of Budweis) 1837/1114
- MLEO 5/018 Recipient : Leopoldine Society Board of Directors 1837/1114
- MLEO 5/019 Author : Reichel, Wenzel (Director-Chancery of Vienna) 1838/0127
- MLEO 5/019 Recipient : von Bruchmann, Johann Christian (Edler-LS Treasurer) 1838/0127
- MLEO 5/020 Author : Milde, Vincent Eduard (Archbishop of Vienna) 1838/0314
- MLEO 5/020 Recipient : von Bruchmann, Johann Christian (Edler-LS Treasurer) 1838/0314
- MLEO 5/021 Author : Reichel, Wenzel (Director-Chancery of Vienna) 1838/0730
- MLEO 5/021 Recipient : von Bruchmann, Johann Christian (Edler-LS Treasurer) 1838/0730
- MLEO 5/022 Author : Belik, Joseph (Bishop of Zips) 1838/0716
- MLEO 5/022 Recipient : Leopoldine Society Board of Directors 1838/0716
- MLEO 5/023 Author : Rese, Frederick (Bishop of Detroit) 1838/0401
- MLEO 5/023 Recipient : Leopoldine Society Board of Directors 1838/0401
- MLEO 5/024 Document : Statement of Expenses (1837-1838) 1838
- MLEO 5/024 Author : Leopoldine Society 1838
- MLEO 5/025 Author : Kundek, Joseph (Father-Vienna) 1838/0316
- MLEO 5/025 Recipient : Chancery of Vienna 1838/0316
- MLEO 5/026 Author : Kundek, Joseph (Father-Vienna) 1838/0221
- MLEO 5/026 Recipient : Milde, Vincent Eduard (Archbishop of Vienna) 1838/0221
- MLEO 5/027 Author : Dichtl, Herman (Father-Spiritual at St.Georg-Prague) 1838/0717
- MLEO 5/027 Recipient : Leopoldine Society Board of Directors 1838/0717
- MLEO 5/028 Author : Dichtl, Herman (Father-Spiritual at St.Georg-Prague) 1838/0717
- MLEO 5/028 Recipient : Leopoldine Society 1838/0717
- MLEO 5/029 Author : Mayr, Petrus Georg (Bishop of Gurk in Klagenfurt) 1837/1223
- MLEO 5/029 Recipient : Leopoldine Society Board of Directors 1837/1223
- MLEO 5/030 Author : Scholz, Franz (Father-Lana, near Merano) 1838/0322