Flat tops and Arch-tops a comparison.

Hi,
This is my personal view of how these two types of guitars developed, mostly in the earl;y 20th century, and mostly, but not entirely in the USA.
My apologies for my poor playing - I never was much good at jazz styles and it's been a long time!
Instruments used :
Collings DS1
Gibson L-4 (1935 model)
Eastman E20-P
Lebeda F-5 Premium mandolin.