| Surname | First name | Pseudonym | Year of birth | Fond No. | Inventory No. | File No. |
|---|---|---|---|---|---|---|
| Firkovič | Konstantin | - | - | 3435 | 64 | 426 |
| Firkovič | Michailas | - | - | 1771 | 3 | 1043 |
| Firkovič | Olga | - | 1965 | V-4 | 1 | 47013 |
| Firkovič | Olga | - | 1965 | V-4 | 2 | 2 |
| Firkovič | Tamara | - | 1928 | K-1 | 60 | 989 |
| Firkovič | Tamara | - | 1928 | K-1 | 61 | 18 |
| Firkovič | Violeta | - | 1961 | L-3 | 4 | 1 |
| Firkovič | Zofija | - | 1929 | L-3 | 4 | 1 |
| Firkovičius | Gabrielis | - | - | 4421 | 2 | 8 |
| Firkovičius | Gabrielis | - | - | 4421 | 2 | 15 |
| Firkovičius | Gabrielius | - | - | 4421 | 2 | 8 |
| Firkovičius | Gabrielius | - | - | 4421 | 2 | 17 |
| Firkovičius | Josifas | - | - | 1771 | 279 | 1655 |
| Firkovičius | Josifas | - | - | 1771 | 279 | 331 |
| Firkovičius | Leonidas | - | 1957 | K-1 | 61 | 18 |
| Firkovskaja | Valentina | - | 1920 | V-147 | 49 | 1 |
| Firlevičius | M. | - | - | V-135 | 9 | 9 |
| Firmanas | Ferdinanadas | - | 1905 | V-135 | 7 | 15 |
| Firmanas | Ferdinandas | - | 1904 | V-135 | 7 | 11 |
| Firmanas | Ferdinandas | - | 1905 | V-135 | 7 | 656 |
