This historical map series consists of the Planimetric Series printed monochrome maps named using the National Topographic System (NTS) map sheet identifier within Alberta. The Planimetric Series base maps were initiated in 1949 and derived from aerial photographs taken during the years 1949 to 1952. These maps display: Alberta Township System (ATS) - hydrographic features - provincial highways - roads - pipelines - transmission lines - municipalities. These maps are not available as GIS-ready data. All available maps are provided in Adobe PDF and TIF format. To obtain the TIF format, please contact the distributor. Geo-referenced PNG files are also available for most maps. Please note that the coverage for the province is incomplete and it is not known if further coverage will be added.