I read somewhere a long time ago, that if you pay attention, most pictures taken of "cowboys" and such show everyone with their hats pushed back to the back of their heads.
The question was asked if this was a "style" back then.
The answer given was no, due to photography of the times, everyone was asked to "stay absolutely still" and to "push that hat back so we can see yur face!".
Anyone have more insight on this?