Postcard from Max Rehder to Theodor Rehder in 1921 with an image of himself on front

Postcard from Swiss Ralls to Rehders during First World War with martial image on front.

Postcard from Swiss Ralls, European Relatives of Lincoln Family Friends talking about time in Germany and hopes for American visitors in Switzerland. Note the name change from "Berlin" to "Lincoln."

Postcard from Theodor Rehder with image of Berlin, Iowa's German Savings Bank on front.

Postcard image of Spangenberg, Germany, hometown of Augustus Sinning.

Broad-scale image of ancestral Nauman family home of Wiebelskirchen taken in years before First World War.

Postcard from Elsa Rehder to American relatives sent in 1915 with image of Ludendorff on front.

Postcard from Henry Voss to Theodor Rehder in German with image of Waterloo, Iowa on front.

Photograph from the wedding of American soldier Ben Tylee and his German war bride, Magdalena Gerhard. They married in 1922, following his service in the war. On the back, Magdalena has written "Ben & I, May 6, 1922, married in Coblentz."

Postman refuses to deliver mail to Germans after brother dies in France.