Little Robots (1933)

This rendition of a robot from the comic Tillie the Toiler ran in the October 16, 1933 Wisconsin State Journal (Madison, WI).

See also:
Mammy vs Robot (Charleston Gazette, 1937)
Donald Duck's "Modern Inventions" (1937)

Future Plane Travel (1920)

This 1920 cartoon of future plane travel can be found in the Library of Congress collection.

That Synthetic Food of the Future (Ogden Standard-Examiner, 1926)

This cartoon appeared on page 10 of the Ogden Standard-Examiner (Ogden City, Utah) on September 19, 1926. In a clear homage to Dilbert, the boss in panel three screams, "It's the second time this week you've taken four minutes for lunch!!" It seems like everyone's stealing from Scott Adams these days.

(Click on the cartoon to make it larger.)