1. S. R. I. Sueviæ circulus atq. ducatus Maps Stanford University Public content Visscher, Nicolaes, 1649-1702. per Nicolaum Visscher. Relief shown pictorially, and by shading. Bar scale on map, given in "Milliaria Germanica communia" (also "Gemeene Duytsche ... Nicolaum Visscher.