Underwater boats will offer tourist excursions



Unknown : Designer
Around the year 1900, Hildebrands, a German chocolate company, commissioned a set of postcards to envision life in the year 2000. This image shows an underwater boat for tourist excursions.


'Postcards Show the Year 2000 (circa 1900)' - Paleofuture Blog, 2007


http://www.paleofuture.com/blog/2007/4/24/postcards-show-the-year-2000-circa-1900.html