I am an instructional designer working with faculty and students at a college, and would like to incorporate historical maps (and not just images of those maps) as layers which could then support adding map notes, pins, etc. An example from the gallery would be the "Copernicus and His Universe" story, which uses maps from 16th c. Europe in a dynamic way that is capable of supporting pinned locations, etc. My question is, how do I do this?