|Exactitude, 1929 Pierre Fix-Masseau. Dover Press|
It originally was a lithograph, where each color is hand-drawn on a separate plate and then pulled through a special printing press. The result is pure color, not tiny dots.
Prints of "Exactitide" are in museums in Paris and the the Museum of Modern Art in New York. The printing process has to be difficult. If you look at the smoke, that printing step, especially.
I looked at this poster for a long time to try and see its appeal, but I am not a railroad buff. To me it shows power of the the mighty machine compared to the very tiny image of the engineer.
What do you think?