Nice bow Steve.
Now It is one thing when you find one of these old bows in a garage sale or something. It is a whole nuther program when it is inhereted from your Grampa. That makes it a family heirloom.
First and formost, I don't know if you know it or not, but the aluminum in the bow was recycled from scrapped B-17's. This deal was negotiated for Bear by Glen St. Charles and Boing (I think).
Many of them cracked up because of the adhesion problems between the metal and the wood. The fact that this one has survived this long probably says it is one of the more solid ones, but sitting in the attic all these years may have crystalized the glue. It is your business, but I would not even string that bow. Keep it as a wall hanger and cherish it for what it is...a great piece of archery history, and a great keepsake from your Grampa.
Bow doc or Wade Philips can probably tell you what the quiver, arroWs, and broad heads should be to keep it period correct. Probably may even be able to hook you up with the right stuff.
TREASURE WHAT YOU HAVE IN THAT BOW!!