You are standing at a sale with an old book in your hands. It has a pocket glued inside the back cover, a card still tucked in it, and a column of faded purple date stamps running down the card.
So what do you do? Buy it or put it back?
I get asked some version of this all the time, and the honest answer has two halves that seem to argue with each other. Both halves are true.
By the end of this you will know three things:
An ex-library book is a book that used to belong to an institution. A public library, a school library, a church library, a university, a historical society.
It usually carries the marks of that life. Ownership stamps on the title page or the page edges. A call number written or stamped inside. A spine label. A bookplate. An embossed seal. A pocket glued inside the back cover with a card in it.
People mix this up with ex libris, so let me clear that up now. Ex libris is Latin for "from the library of." It means the book came out of a person's collection, not an institution. That is a completely different thing and it can sometimes add value if the person is interesting. Ex-library is the institutional one, and that is what we are talking about here.
I am going to be straight with you, because you would find this out anyway.
In the collecting trade, ex-library copies sell for less. Sometimes much less. The stamps, the pocket, the call number, the spine label, and the heavier wear that comes with years of lending all count against a book on the collector side of the market.
Two things make it worse than people expect.
The first is that pulling the pocket out does not fix it. Removing the pocket, or slicing out the page it was glued to, does not put the book back where it was. Now you have library markings and damage. Leave it alone.
The second is the tape. Libraries protected dust jackets by taping them to the book and slipping them into a clear cover. That tape ages. Years later it leaves brown stains on the endpapers and the boards, and that staining is often the real condition problem, more than the stamps ever were.
So if you are buying a first edition as an investment, the library copy is not your copy. That is just true and no amount of good feeling changes it.
Here is the part I care about more, because most of my customers are not investors. They are trying to find a specific book they remember, or build a shelf that means something.
If the card is still in the pocket, do not throw it away.
That card is the only surviving record of the book's working life. Before barcodes, this is how the whole thing ran. Every circulating book had a pocket glued inside the back cover holding a card. You brought your book to the desk, the librarian pulled the card out, stamped it with a due date, and filed it in a tray sorted by date. She stamped the slip in the book too, so you knew when to bring it back.
That means the card in your hands is a list. Every stamp is one time a person carried that book home.
And one more thing worth knowing, because people assume the worst. Libraries almost never sell books to raise money. They release them to get shelf space back, and most of what goes out the door is a duplicate copy or something that stopped circulating. Nobody made a mistake. The book just finished its job there.
This is the part that actually matters at the sale, so here is how I decide.
Buy it when the book is the point. A children's reader you remember. A title that is genuinely hard to find in any condition. A book you want to read, use, or put on a shelf where you will see it. In those cases the markings cost you very little and often save you a lot of money.
Buy it when the record is the point. A card with forty stamps on it from a small-town library in 1961 is a real object with real history in it. If that is why you want the book, the pocket is not a flaw. It is the reason.
Put it back when you are buying value. A first edition with library markings does not hold its value the way a clean copy does, and the pool of buyers for it is very small.
Put it back when the damage moved past the markings. Check the endpapers for brown tape stains. Check whether the spine label took the cloth with it. Check whether somebody already ripped the pocket out and tore the page. Stamps are cosmetic. That other stuff is structural.
Availability is not the same as the right copy. That goes both directions here.
If you want a clean copy for value, a library copy is the wrong one no matter how cheap it is. But if you are chasing a book you remember, or you want a shelf full of things that were actually used by somebody, a stamped card in a glued-in pocket might be the best part of the purchase.
Either way, the seller should tell you which one you are getting. Ex-library belongs in the description, every time, along with what the markings actually are. If a listing does not say, ask. A seller who cannot answer plainly has not looked closely enough at the book.
When I list a former library book here, you will see the markings in the photos and you will read about them in the condition notes before you buy. That is the whole point.
Take a look at what is on the shelves right now in the vintage children's books, browse all books, or see what turned up in New Old Finds.
Keep turning those pages. Pam
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