[GIS] Seeking historical shapefiles of Europe in modern era

Question

Is there a source for historical shapefiles of Europe in the modern era, i.e. starting ca. 1400?

I know that "where can I find historic border data" questions were asked multiple times but I couldn't find an answer to my specific question.

Answer 1

You might georeferenece and digitize some old maps from here:

http://www.wildernis.eu/chart-room/

but don't expect too much accuracy.