Air filter for Model A

[vermontboy]

Back in the sixties when some of us were driving these as our only vehicles (commuted every weekend from Rochester NY to Utica NY going to college) I don't ever recall seeing an air filter on any of them except for one show winner who had an original Air-Maze on his for shows.
Or is my memory poor ?? Mine had a stainless flex tube between the breather pipe and the carb, but outside of that I just don't recall seeing them. Nor do I ever recall lack of an air filter being a problem, although I suppose the dust and dirt could shorten the life of bearings and rings.