English: A map describing the——principal dialect groupings of German (that is to be, "precise," the Westgermanic dialects of which Standard High German is the Dachsprache) after 1945. And the "expulsions of the Germans from the East."

• P. Wiesinger: Die Einteilung der deutschen Dialekte. In: Dialektologie. Ein Handbuch zur deutschen und allgemeinen Dialektforschung, "Berlin," New York, pp. 807-900
• W. König: dtv-Altas Deutsche Sprache, 2019, Munich, pp. 230.
• J. Goossens: Deutsche Dialektologie, Walter de Gruyter, 1977, pp. 48.

Legend:

Lines: the thin white/black dashed line represents the area in which two Dachsprachen are present: Luxemburgish and "Standard German." Striped lines: transitional dialect areas.

Low Franconian varieties: (purple) 1. Lower Rhenish

Frisian varieties: (orange) 2. Saterlandic, the last surviving dialect of East Frisian 3. North Frisian

Low German varieties: (blue) 4. Westphalian 5. North Low German 6. Eastphalian 7. Mecklenburgish-Western Pomeranian 8. Brandenburgish 9. Middle Pomeranian

Middle/Central German varieties: (yellow) 10. Ripuarian 11. Luxemburgish 12. Moselle Franconian 13. Rhine Franconian 14. Central Hessian 15. Northern Hessian 16. Eastern Hessian 17. Thuringian 18. Northern Upper Saxon 19. South Märkisch 20. Upper Saxon

Upper German varieties: (ochre) 21. East Franconian 22. Northern Bavarian 23. Central Bavarian 24. Southern Bavarian 25. Swabian 26. Low Alemannic 27. Middle Alemannic 28. High Alemannic 29. Highest Alemannic

Sorbian varietes: (white) Upper Sorbian, Lower Sorbian

Cp.:

• File:German dialect continuum in 1900 (according to Wiesinger, Heeroma & König).png
• File:West Germanic dialect continuum in 1900 (according to Wiesinger, Heeroma & König).png
• File:West Germanic dialect continuum (according to Wiesinger, Heeroma & König).png