wipers!!?????

I need the OEM part that holds the blade. One set for a duster , probably 14 inch, and a set for a 79 volare , 15 inch? 2 years ago back in Missouri I could get them from NAPA< O reillys, but they say, not any more. I have not found any stores in Tx that can get them.
Usable used ones would also work.