I am using the Cascade variant StoryMap. I'd like to include an old Sanborn map from 1914 allowing people to zoom in and out. Is this possible?
If you have access to ArcGIS Desktop (or have a colleague that does) you can bring your historical map image into ArcMap, georeference it, publish it as a tiled service to ArcGIS Online, add the service to a web map, and use that web map in your Cascade story. Here are some examples of interactive historical maps used in story maps:
I'll give this a shot when I have a chance. I think this work might have to be put on the back-burner. I'll suggest it to the project manager.
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