I am currently trying to think of the best way to share numerous collections of historical raster maps that we have in our organisation via the web e,g ArcGIS Server/AGOL. The current solution we have in place is that we have created numerous file geodatabases with managed raster catalogues inside them and have imported the tiles into them. These are stored on our ArcGIS servers and are published to web map services which does work as a solution. However when using them on the web there can be a be time delay which is to be expected however some people it takes longer than others probably down to internet connection.
We have considered doing cached services however due to the amount of maps we have don't think it would work this way and could result in too many services or not being able to see tiles if they overlap in multiple different years/scales
We did experiment with creating local caches which we would reference in the service however we found this took along time to do and alot of storage space.
Was wondering if anyone had any other suggestion or approaches we might consider?
You might have a look at Topotijdreis: 200 jaar topografische kaarten for some inspiration. In this application more than 200 years of historical maps, covering the Netherlands, is served in a very user friendly way.
This app has been build and is being maintained by the Dutch Esri reseller, Esri Nederland. Maybe they can provide you with some guidance.