National Board of Survey's Parish map 1:20 000 map sheets published between 1916-1968 in polyhedrical and Gauss-Krüger projection (later general map sheet division). Both include black and white and hand coloured sheets with surface symbols or without (i.e. forest symbols). Gauss-Krüger projection sheets starts from 1927. Maps include cadastral boundaries but do not include countour lines. Maps are based on land surveyors' detailed maps. Production of the series was ended in 1951 but few maps were still published after this. Basic map replaces this map series from 1947 onwards. Each map is available in two versions: * `With_marginalia`, these include the area of the paper map. * `Without_marginalia`, these include only the actual map area. The maps have been georeferenced using the corner points of the sheets and transformed into the current coordinate system based on the sheet index. Coordinate system of the files: ETRS89 / ETRS-TM35FIN (EPSG:3067)." More information: [https://www.strang.fi/karttatieto/#pit_yl](https://www.strang.fi/karttatieto/#pit_yl) (in Finnish).

2024