| Termen/ Term | Nr. apariții/ No. occurrences |
| MONNIER HENRY | 28 |
| MONNIER HENRY ? | 1 |
| MONNIN | 4 |
| MONOD M. L. | 1 |
| MONOGRAMIST M.B. | 1 |
| MONOGRAMISTUL JVN | 2 |
| MONROCO FRERES | 1 |
| MONTAGNOLA | 1 |
| MONTALBANO L | 1 |
| MONTANARINI LUIGI | 1 |
| MONTANINI PIETRO NUMIT PETRUCCIO | 2 |
| MONTANO | 1 |
| MONTANO GIOVANNI BATTISTA | 34 |
| MONTAUT | 2 |
| MONTCHABLON XAVIER | 1 |
| MONTFORT ANTHONIS, NUMIT BLOCKLANDT | 1 |
| MONTICELLI ADOLPHE | 1 |
| MONTICELLI ADOLPHE JOSEPH THOMAS | 6 |
| MONTIGNEUL | 1 |
| MONTILLA Y MELGAR MANUEL DE | 1 |
| MONTRUTI ANTONIO | 1 |
| MOORE HENRY | 1 |
| MORALES LUIS DE | 1 |
| MORAR IOAN | 2 |
| MORAR NICHITA | 19 |
| MORARESCU DRAGOS | 4 |
| MORARU TEHODOR | 1 |
| MORARU TEODOR | 10 |
| MORAVEC AL. | 2 |
| MORAVEC ALOIS | 1 |
| MORAVIA | 2 |
| MORE MIHALY | 1 |
| MOREANU MATHIEU | 1 |
| MOREAU | 1 |
| MOREAU AUGUSTE | 2 |
| MOREAU FRANCOIS | 1 |
| MOREAU GUSTAVE | 2 |
| MOREAU LE JEUNE | 10 |
| MOREAU LE JEUNE JEAN MICHEL | 2 |
| MOREAU LOUIS | 1 |
| MOREAU MATURIN | 1 |
| MOREAU NELATON | 4 |
| MOREL | 19 |
| MOREL A. | 68 |
| MOREL-FATIO ANTOINE-LEON | 1 |
| MORELLI AEGIDIUS | 1 |
| MORELLI DOMENICO | 3 |
| MORELLI GUSZTAV | 2 |
| MORET | 3 |
| MORGHEN RAFAEL | 4 |