Collections by Title (Catablog)
- Bonner, John J. Papers, 1909-1945 (MC 49)
- Catholic Club of Philadelphia. Records, 1871-1923 (MC 23)
- Catholic Interracial Council (Philadelphia). Recordings, 1950-1974 (MC 68)
- Catholic Philopatrian Literary Institute. Records, 1870-1950 (MC 26)
- Catholic Standard and Times. Records, 1909-1941 (MC 27)
- Catholic University of America. Records, 1947-1955 (MC 35)
- Coad, Patrick family. Papers, 1798-1880 (MC 37)
- Connelly, James F. Papers, 1790-1974 (MC 67)
- Cooper, Samuel. Papers, 1769-1945 (MC 56)
- Corrigan, Joseph M. Papers, 1896-1942 (MC 25)
- Donnelly, Eleanor C. Papers. 1873-1905 (MC 48)
- Fair, Bartholomew F. Papers, 1906-1966 (MC 24)
- Fenian Brotherhood. Collection, 1862-1870 (MC 14)
- Flick, Lawrence Francis. Papers, 1889-1930 (MC 18)
- Frenaye, Mark Antony. Papers, 1807-1868 (MC 16)
- Griffin, Martin I. J. Papers, 1842-1911 (MC 8)
- Hawks, Edward F. Papers, 1900-1952 (MC 15)
- Heuser, Herman Joseph. Papers, 1872-1933 (MC 1)
- Irish College, Rome. Transcripts, 1832-1848 (MC 53)
- Kappes, Augustine G. Papers, 1899-1909 (MC 59)
- Keogh, John W. Papers, 1906-1960 (MC 50)
- Kite, Elizabeth Sarah. Papers, 1865-1941 (MC 2)
- Lallou, William J. Papers, circa 1890-1973 (MC 55)
- Lloyd, Thomas family. Papers, 1766-1867 (MC 45)
- Lynch, David. Papers, 1830-1865 (MC 13)
- Martin, Campbell, and Furlong families. Papers, 1795-1963 (MC 90)
- O’Reilly, Robert M. Papers, 1864-1916 (MC 34)
- Seton, Elizabeth Ann. Letters, 1799-1818 (MC 44)
- Smith, Walter George. Papers, 1836-1933 (MC 47)
- White, William C. Letters, 1861-1869 (MC 17)