Lost Futures: A 19th-Century Vision of the Year 2000 – The Public Domain Review

The most accurate depictions are in the theaters of warfare and industrial agriculture — testament to the driving economic forces of technological development across the twentieth century: gatling guns affixed to automobiles, blimp-like battleships, fields cut with combine harvesters.

Good read. At the bottom of the article is a link to some public domain art.

Six panel: various art depictions of the future.
Jason Velazquez @fromjason