Well it looks like Strasbourg on the front, a little 1940 history of Strasbourg:
Quote:
Between the German invasion of Poland on 1 September 1939 and the Anglo-French declaration of War against the German Reich on 3 September 1939, the entire city (a total of 120 000 people) was evacuated, like other border towns as well. Until the arrival of the Wehrmacht troops mid-June 1940, the city was, for ten months, completely empty, with the exception of the garrisoned soldiers. The Jews of Strasbourg had been evacuated to Périgueux and Limoges, the University had been evacuated to Clermont-Ferrand.
After the ceasefire following the Fall of France in June 1940, Alsace was annexed to Germany and a rigorous policy of Germanization was imposed upon it by the Gauleiter Robert Heinrich Wagner. When, in July 1940, the first evacuees were allowed to return, only residents of Alsatian origin were admitted.
So it's possible that the recipient was evacuated and wasn't allowed back in, or didnt want to come back.