This vintage Rumford Baking Powder Stock Book is more of a collectible than a practical item for daily use. Since it's old and shows signs of wear, be gentle when handling it. Don't bend the pages too hard to avoid tearing. When storing, keep it in a dry and cool place away from direct sunlight to prevent further fading. It's not meant to be written on or used in the way a regular stock book would be, but it can be a great addition to your baking - related collection.