| Termen/ Term | Nr. apariții/ No. occurrences |
| Munster, S. | 4 |
| Munții Apuseni | 2 |
| Muren | 1 |
| Murgulescu, Ilie G. | 2 |
| Muscel | 3 |
| Muschalek Carl | 4 |
| Mutzig | 1 |
| Muzeul București | 13 |
| Myto | 1 |
| N. 8 | 1 |
| N. Șerbănescu Z. Pisochi Turnu Severin | 1 |
| N.Teh-Have | 1 |
| Nachfolger | 1 |
| Nadar | 4 |
| Nadar Rue D'anjou 51 | 1 |
| Nadrag | 3 |
| Nagy Ioszef | 1 |
| Nagy Samuel | 1 |
| Nagy, W. | 5 |
| Napoli | 11 |
| Năsăud | 5 |
| National Photo | 1 |
| Navigația Fluvială Română | 1 |
| Nc.Sanson | 1 |
| Neamț | 1 |
| Neapole | 1 |
| necunosccut | 1 |
| necunoscut | 793 |
| nedeterminat | 86 |
| Neff, Anton | 2 |
| Negrescu, L. | 3 |
| neidentificat | 8 |
| neidentificate | 4 |
| Nestor Heck Peintre et Photographe | 1 |
| Nestor, Heck | 5 |
| Neurdein, E. | 1 |
| Neuwied | 43 |
| New Castle | 1 |
| New Duluth | 1 |
| New Jersey | 1 |
| New Philadelphia | 1 |
| New York | 12 |
| New York Times | 6 |
| New York Times Bild | 1 |
| Newark | 2 |
| Neyersbepg | 1 |
| Nica I. Teh. | 3 |
| Nica Z., Tehnician Minier | 1 |
| Nice | 3 |
| Nichita Georgescu Băile Govora | 1 |