L.N.M.
- Machlinia, William de, [109], [128].
- Maioli, Thomasso, [151], [152].
- Mansion, Colard, [116], [117], [121], [122].
- Manuscript, oldest Biblical, [17].
- —— oldest Homeric, [17].
- —— oldest New Testament, [18], [20].
- Manuscripts, Arabic, [21].
- —— Arabic-Spanish, [56].
- —— Byzantine, [37].
- —— Classical, [17], [20].
- —— Coptic, [21].
- —— of Four Gospels, [19].
- —— Greek, [14], [15], [18].
- —— Hiberno-Saxon, [43].
- —— Illuminated, [36]–46.
- —— Irish, [37], [39]–41, [44].
- —— Italian, [37].
- —— Moorish, [56].
- —— printed illustrations in, [73].
- —— Syriac, [21].
- —— Winchester, [45].
- —— of Virgil, [19].
- Marienthal, [117].
- Mentelin, John, [105].
- Mentz, [82], [87], [88], [90], [92], [93], [96]–98, [100], [101], [109], [117], [121].
- Monasteries, books in, [21]–24, [145], [146].
- Monastic writing, [15], [19], [21], [22], [24], [46], [47], [49].
- Morris, William, [80].
- Musical notes printed, [103], [128].
- Myllar, Andrew, [131]–135.