Obtaining Automatically Railway Maps from a Set of Historical Events Eugenio Roanes-Lozano Angelica Martinez-Zarzuelo Alberto Garcia Alvarez Michael J. Wester Eugenio Roanes-Macias We have developed what, as far as we know, is a real novelty: a computer package that can automatically generate railway maps of a certain network at any (past) date requested. It uses different colors to show the kind of line and uses as input: (i) a set of historical events, (ii) the graph of the railway network at its maximum extension and (iii) a list of geographical coordinates of stations, junctions, loading bays... (that are the nodes of the graph). The package firstly processes the set of historical events (affecting whole lines or parts of lines), and assigns a list of dates to each edge of the graph. Then, when a date is given to the system, it computes the right coloring for each edge at that given date and constructs and plots an accurate map of the railway network at that given date according to the geographic coordinates of the nodes of the graph. This piece of software can be really useful for geographers, historians and engineers. What is normally available are maps of certain dates, and they don't always use the same scale, the same level of detail, the same symbols and colors... or are restricted to a certain railway company. The research has been carried out in cooperation with the ``Spanish Railway Foundation''. The data of the Spanish broad gauge railway network at a region of Spain (Extremadura) has already been typed as illustration.