251 Wongrowitz (1:100 000 Karte des Deutschen Reiches (Generalstabskarte), ark. poj. /1870 - 1944/)
 | Wongrowitz | Wągrowiec | ±1893 | 600 dpi |  |
| obraz oryginalny / original image |
 | Wongrowitz | Wągrowiec | ±1893 | 600 dpi |  |
| obraz scalony / composite image |
 | Wongrowitz | | 1904 | 600 dpi |  |
 | Wongrowitz | | 1918 | 300 dpi |  |
 | Wongrowitz | | ±1930 | 600 dpi |  |