Encyclopedias, Almanacs, Transcripts, and Maps
- Mazzarella, Modestino, Bl.
- Mazzarello, Maria Domenica, St.
- Mazzella, Camillo
- Mazzolini, Sylvester
- Mazzucconi, Giovanni Battista, Bl.
- Mazzuchelli, Samuel
- McAuley, Catherine Elizabeth
- McCaffrey, John Henry
- McCloskey, John
- McCloskey, William George
- McCormick, Richard A.
- McDevitt, John W.
- McDonald, Barnabas Edward, Brother
- Mcdonald, James Grover°
- McDonnell, Thomas John
- McElroy, John
- McFarland, Francis Patrick
- McGivney, Michael Joseph
- McGlynn, Edward
- McGowan, Raymond Augustine