Shapefile of railways in Europe between 1900 and 1920

Shapefile of railways in Europe between 1900 and 1920 based on historical cartography of different libraries. Shapefiles each 20 years because of the impossibility of finding historical cartography every year.本数据集为基于多家图书馆历史地图制图资料制作的1900年至1920年欧洲铁路线路空间数据文件（Shapefile）。由于无法逐年获取历史地图制图资料，该数据集按每20年为一个周期生成对应版本的Shapefile数据。