October, Very nice bow. I would venture to say thats it's lemon wood. Osage would be darker,especially with that amount of age and it was very common around that area and time frame for bows to be made with lemon wood and backed with FG.
It looks in great shape for it's age. Just be very carefull drawing on old bows coming out of storage. Go slow working the limbs a little at a time. Keenan