What a cracking pair of bikes! You really have hit the jackpot there. Except that as others have said, they're both quite a lot too big for you. I'd say those would be right for a 5' 10" bloke, give or take. But that doesn't stop you doing them up, so...check them out, lubricate things that need it - chain and cables (run 3-in-1 down into the housing from each end, working the brakes/gear levers to encourage the oil in), and gears - again, lots of shifting while you oil at every pivot - possibly brakes, again at the pivots. And more than likely that's all you'll need to do, apart from replacing perished tyres and maybe brake blocks. Good old bikes like those don't tend to go wrong, as such. Shame they're the wrong size for you - they'll be a joy to ride once they're done.