How special! You are going to have lots of fun using her.
I have discovered a new (to me)website that gives monthly tips on the cleaning, maintenance and restoring our 'finds'. Nova tells what to use to clean and to shine these machines. She is very knowledgeable and you might like to visit her site.
nova's featherweights.com
If this doesn't work Google Nova Montgomery Featherweights.
Enjoy your new find.