“Man has invaded space — not in airplanes which would fall to pieces with age before Earth’s near neighbors were visited, but with thoughts which travel faster and work more miracles even than the light of the sun.”
From a 1918 encylopedia of sorts, for children, this beautiful poster does a great job of illustrating the concept of the relative enormity of space. There is a lot of information here, presented in a very accessible design.
The spaceships themseles are whimsical but not entirely unlikely creations, amalgams of several different types of ships and planes, which seem to be leaping into space directly out of the ocean and into a map of our solar system.
The notes and captions around the sides of the drawing help paint the picture of the scale of this map (though using a now-common speed of around 120 mph — 2 miles per minute) with references to well-known historical happenings.
Still a useful teaching tool. Good design withstands the test of time.