Don't Judge a Book by its Cover?

Book covers, like the quality of paper in the book, reflect the cost of the book as well as information about its owners or primary users. This book has a limp vellum cover, a fine parchment cover made of animal skin typically that of a calf, kid, or lamb. This choice to bind the book in leather may reflect the importance of the official documents in this book or that this book was meant for practical purposes and not for show. Other aspects of the cover teach us other things too.