blogis librorum. A blog about books. Rare books.

If you’ve ever purchased a new book from a bookstore, a secondhand book, or a textbook for a course, you’ve most likely held a book that has an ISBN number. Sometimes college and university faculty will emphasize the need to buy a book for a course with a specific ISBN number to ensure that everyone has the same edition. You might even have entered an ISBN number if you’ve gone onto a publisher’s website with the intention of identifying or ordering a book. Anyone who has ever had to use an ISBN number already knows, most likely, that these numbers can have 10 digits or 13 digits. Even though many of us have identified a book by its ISBN number in some fashion, it’s rare to take a step back and to think about the purpose and history of the ISBN number. We want to tell you more about the history of the ISBN and why these numbers can be extremely helpful to book collectors.

For years, Mary Shelley was sadly overlooked as a writer. Though she created one of the most iconic monsters in literature in her novel Frankenstein (1818), for more than century after her death she was often thought of as a one hit wonder. Or she was thought of as Mary Wollstonecraft’s daughter, or philosopher William Godwin’s daughter, or Percy Shelley’s wife and literary executor. That is, when she was thought of at all.

Rarely does bookbinding receive the attention and glamour afforded other ancient crafts. The craftsmanship required by bookbinding is largely concealed. The role of the bookbinder is that of a guardian; they serve to protect the book's contents to guarantee access for generations of readers. Foremost in the bookbinder's mind is durability and function.

So you think you want to sell your rare books? Making such a decision can be exciting, but it can also be pretty intimidating. Should you try to sell the books on your own? Should you take them to an auction house? Or should you find a rare book dealer who can list them on consignment or buy them from you outright for resale? And how do you know how much the books are even worth? You may need to have your books appraised in order to know exactly what you have. Once you have a general sense of what your books are worth, you have a few options when it comes to selling them.

Buying rare books online can be tricky, but it can also be a lot of fun. While browsing in rare and antiquarian bookstores should still remain one of your favorite pastimes, sometimes buying online can also be exciting. We want to give you some advice about where to buy, what to be wary of, and how to know you’re getting what you want.

Depending upon your previous experience buying rare books, the answer to a question about how to find them might seem either obvious or baffling. So, how does one find rare books? In brief, you can find rare books in a number of places, but knowing precisely where to look can get more complicated than you'd think. Depending upon what kind of rare books you’re looking for, you may need to consult a rare book dealer who specializes in the particular type of text you’re seeking. And to ensure that you’re buying what you think you’re buying (and not a reproduction, for example), it’s important to know how to identify a reputable seller. So, if you’re still looking for rare books, let us give you some ideas of how you can locate what you seek.

Determining the value of a book or an ephemeral object can be very difficult. While certain texts are highly sought after under almost any circumstances, some items can be very tricky. Some old books are extremely valuable, yet some old books have almost no market value at all. Some books with inscriptions have significant market value, while many books with personal or sentimental notes have little to no market value. Although the condition of a book will almost always impact the object’s value on the market, some books in quite poor condition can still be extremely valuable depending upon the provenance. In short, determining a rare book’s value is typically a holistic enterprise that involves taking into account many different factors.

If you have a book that you believe to be rare and to have significant market value, you should get in touch with a rare bookseller who can properly appraise the object for you. In the meantime, we want to provide you with some of the key elements that go into determining the value of a rare book or paper object.

Are you thinking about starting a rare book collection? The prospect of establishing a collection of rare books, ephemera, and other print objects can be daunting when you do not have much background knowledge about the subject. Yet we want to emphasize that anyone can create a rare book collection. If you have an interest in rare books and the desire to establish a collection, you’re already on your way. We want to give you some important tips concerning the logistics of starting your collection.

We often hear about people who are starting or adding to rare book collections, but it can be difficult to know exactly what counts as a “rare” book. Indeed, you may find yourself wondering: What is a rare book? The Oxford English Dictionary (OED) defines something that is “rare” in a variety of ways, and some of them certainly apply to rare books. For example, the OED defines a rare object as “a thing or things . . . occurring infrequently, encountered only occasionally or at intervals, uncommon,” or “of a kind seldom found, done or occurring; unusual, uncommon, exceptional.” These definitions can help us to understand why a book might be rare—it is found infrequently, is uncommon to see or to hold, and is exceptional in some capacity. Yet, as you might guess, not all rare books are exceptional in the same ways.

Umberto Eco made quite a name for himself as a philosopher, author, and semiotician. He also earned a reputation for being an enthusiastic collector of rare books. Eco amassed tens of thousands of books, and always observed that he hadn't read most of them. Yet his personal library played an important role for him as a writer, informing his books with a unique—and fascinating—intertextual layer.