You've got a nice pair of American Optical "Original Pilot" sunglasses and some nice looking Ray Ban's in that lot.
What needs to be repaired? If you are taking about the lenses, they pop in/out with just a jewelers screwdriver. Loosen the screw and they will go right in. I've repaired many this way and lenses out is the best time to hit them with some good quality metal polish like Happich. That way you don't risk damaging the lenses.
B & L was the original parent company that provided eye wear for American pilots in the 1930s. Due to the rise in popularity, B and L offered similar glasses to the public. Ray Ban was a synonym of Anti Glare, the supposed problem the glasses were going to cure for the pilots. It later became a separate entity.
Lenses are plentiful online due to eye doctors selling factory lenses once they turn a pair into prescription sun glasses. Screws are not that hard to find and are, for the most part, standard. I usually save the gold screws from old lady glasses to do any small repairs on AO/Ray Bans since they are worth way more then just gold filled scrap.