I'm trying to discipline myself to wear a hat more often in an attempt to hide from the sun's damaging effects. I'm pretty comfrotable with hat off indoors, or when in the presence of a lady, that sort of thing, but I had to do research about hat etiquette in that most sacred of places...one's watering hole. I asked my dad, who grew up wearing fedoras, and looked pretty snappy as a plainclothesman in the 1940's, how hats were handled at the bar. He told me that when standing at the bar, hats were seldom, if ever, removed. When seated near the bar, hats were removed somewhat more frequently. Of course, ladies were not seen in these establishments. Kind of an interesting peek at the 1930's through the 50's, I thought.
Steinbeck described Doc Ricketts as a man who would tip his hat to passing dogs. I've always liked that image.