The amazing artist we know very little about. Factually, only his name.
Do we really need to make a biography? His works clearly explain his talent! Nevertheless, here is a brief summary of his story.
Bührer has worked as a contributor for some magazines. In fact, his expertise in style analysis clearly built him a legacy and a reputation. Nowadays, Giorgio Piola seems like the heir of Bührer, even if he still is producing amazing drawings.
If you dig a little, you can find a lot of his drawings and even find a new wallpaper.