The image above is an American version of the German postcards from the late 19th and early 20th century. The postcard was found in the book Out of Time: Designs for the Twentieth-Century Future. The text on the left reads, "Compliments of Maher and Crosh Cutlery Co." while the text on the right reads, "Toledo, Ohio."
The image below is the German version of the postcard.
Postcards Show the Year 2000 (circa 1900)
Collier's Illustrated Future of 2001 (1901)
Predictions of a 14-Year-Old (Milwaukee Excelsior, 1901)
The Next Hundred Years (Milwaukee Herold und Seebote, 1901)
What May Happen in the Next Hundred Years (Ladies Home Journal, 1900)