Adding image overlays to maps

Overlaying tiled map services is a big capability on hand. It enables a variety of tiled map services that come into the scene using the Google Maps API. The existing stock of tiled map services are, in general, global map services, which means that they cover the whole world or at least some continent/country.

We may be interested, for instance, to overlay a map for a university campus, having its rough plan on hand. Or, we may have found some map of a historical sheet and want to make use of it. Or, we may have an internal building plan of a particular building and we would like to see this building plan on top of Google Maps.

Is it possible to overlay these microscale images on top of Google Maps? Yes, certainly! In fact, technically, there would be no difference between using campus plans or building plans instead of tiled map services as overlays. The important thing to note is that those plan sheets should be aligned as tiles similar to the tiled map services...