Alsace AKA Elsass
Over the years, Alsace AKA Elsass constantly changed borders and governmental control most recently following World War II. The historic area covers current day southwest Germany, northeast France, or northern Switzerland. Church and other official records are generally unavailable attributable to their destruction over the years due to wars and governmental edicts.
Alsace AKA Elsass Genealogy research web site
Click the above link and you will be taken to an interactive overlay map of the 1760's map and the present day map behind it. In the upper right of the map, you will see a slider which will allows you to slide between present day to the older map. A nice feature is the ability to zoom in and out between the two maps.