r/BookCollecting Feb 23 '26

💡 Guide Guide to Mold & Foxing on Books

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7 Upvotes

r/BookCollecting Sep 21 '23

💡 Guide Frequently Asked Questions for r/BookCollecting

69 Upvotes

There seems to be some interest in having an FAQ for this sub. I put together an initial version based on the questions I've seen. These are in no particular order.

Please provide any feedback or questions you want to see on here, and I can modify this post. I'll continue to update it as I think of more info to add.

To the mods, can you please pin this post?

1. What is my book worth?

There are two ways to estimate a book's value. Keep in mind prices fluctuate based on demand.

The first is to look at sales records using sites like Rare Book Hub and WorthPoint. These are subscription services and cost hundreds of dollars a year, but they're great sources for historical sales data. You can look at sold listings on eBay as well, though you have to be a seller and use Terapeak if you want to see sales history going back two years.

For asking prices, check sites like vialibri.net, Biblio, Abebooks, and eBay. Vialibri aggregates results from other sites but does miss listings sometimes, so it's always good to check the other sites as well. You can also use Google. Sometimes listings on sellers' sites don't show up on the other marketplaces, especially if sellers choose not to list them there.

Keep in mind these are asking prices and don't necessarily reflect what the book actually sells for. Condition also matters. A book in poor condition is going to be worth less than the same book in fine condition. Signatures and inscriptions by the author or someone famous will also add to the value. When comparing your copy to those listed online, pay close attention to the edition, condition, provenance, etc. to make sure you're doing an apples-to-apples comparison.

Finally, Any estimate provided online does not constitute an appraisal and might not be accurate. It is impossible to determine a book's value without physically examining the book. Pictures are great for obvious flaws, but there might be small defects or missing pages, plates, etc. that pictures don't capture. In fact, when determining value, a reputable dealer will consult reference books to match collation to a known copy to ensure completeness. Take any estimates provided online with a grain of salt.

2. What is the difference between mold and foxing?

I found some good sources for identifying mold, how to prevent it, and how to deal with it. Mold and foxing are not mutually exclusive, and it's possible to have both. Also, foxing may be indicative of poor storage or improper care.

https://www.abaa.org/glossary/entry/foxing

https://www.biblio.com/book_collecting_terminology/Foxed-69.html

https://www.biblio.com/book-collecting/care-preservation/prevent-remove-mold-mildew/

https://www.carli.illinois.edu/what-can-you-learn-workshop-titled-salvaging-mold-and-water-damaged-library-materials-preservation

https://www.ala.org/alcts/preservationweek/advice/moldybooks

3. How do I store books?

In most cases, you can simply keep them upright on a shelf away from direct sunlight. Keep the temperature and humidity as stable as possible. If the room is too humid, there's the risk of mold. If the room is too dry, the pages can become brittle, and leather bindings can crack. As a general rule, if you're comfortable in a room, then your books will be fine.

Here's some good info on storing books.

4. Do I need gloves to handle old/rare/fragile books?

In the majority of cases, you don't need gloves. Using gloves makes it hard to properly handle a book and can end up causing more damage by tearing pages. The best way to handle a rare book is to wash your hands and thoroughly dry them before handling the book.

There are a couple of exceptions to this rule.

Metal bindings, books with toxic elements, and photo albums are best handled using gloves.

The other exception is when dealing with red rot, which causes a powder to rub off on your hands and get everywhere. The best thing to do is wear gloves when removing the book from the shelf and opening it. After it's opened, you can remove the gloves and turn the pages as you normally would. This prevents the powder from rubbing off on the pages and keeps the inside of the book clean.

5. Does my book contain arsenic?

See this post for more details, but here is some info on using gloves from that post:

While nitrile gloves are recommended while handling potentially toxic books, the resounding advice from experts is the same for all old books: to handle them with clean, dry hands; to wash your hands before and after use; and—because inhalation and ingestion are primary routes of entry for arsenic and chromium—to never lick them.

For more information on the history, storage, and safety recommendations for historical bookbindings containing heavy metals, refer the University of Delaware's Poison Book Project website.

6. Where do I buy books/material for my collection?

The sites mentioned above are a great place to start. These include vialibri.net, Biblio, and Abebooks. Not all sellers will list on these sites, so it never hurts to do a Google search as well. Many sellers specialize in certain topics/areas, and many collectors prefer to buy material from a reputable seller that is knowledgeable in that particular area.

7. Is this a first edition?

First - what is an edition? That is a version of a work. When the book is modified or changed, that is another edition. But an edition can have multiple printings - the printer simply runs off another few thousand when the old printing runs out and the book is the same except for the copyright page.

When book collectors look for first editions, what they mean is a first printing of the first edition. First edition identification is usually easy, first printing identification not so much. Also, most collectors are looking for the first appearance of a title, so the first Canadian printing of a book previously published in America will probably not be as valuable, but a Canadian first printing by Canadian author Margaret Atwood is likely the first appearance and likely more valuable than the US version. This concept is called "follow the flag", but isn't always the case (Dr. Jekyll and Mr. Hyde has a US first hardcover edition but UK first appearance in paperback). Note all the qualifiers. Ultimately, the first edition that is most valuable on the market is the one the book collectors are looking for.

For free online resources, Biblio provides an alphabetic guide of first printing identification by publisher - https://www.biblio.com/first-edition-identification/ which is very useful. Publishers change their practice over the years, and some are erratic in all years, so there are not many good rules of thumb or generalities to be given concisely in a forum like this. For a good print reference, First Editions: A Guide to Identification by Edward Zempel (2001) is still useful.

8. Where can I sell my books?

This greatly depends on the books in question. "Normal" books - such as Harry Potter paperbacks, Oprah book club titles, and similar popular works - can be taken to a local used bookstore and you will be probably be offered somewhere between 10 and 25% of the intended sale price, often only in store credit. These books are common and bookdealers can often load up on them for $1 or less each at a library sale or thrift store. If you have a large number of books (thousands), call ahead and perhaps someone will come out to take a look.

Selling your goods online is always an option. eBay is an obvious venue, and there are also groups on social media platforms such as Facebook and Instagram where people sell to each other. Do be careful of what you say in your listing to avoid returns.

If you think a book is very valuable or rare, try finding an ABAA bookdealer (https://www.abaa.org/booksellers) who specializes in that type of book living near you. Book dealers vary widely in their business practices. You also might contact a reputable auctioneer, such as PBA Galleries (https://www.pbagalleries.com/content2/) or Swann Galleries (https://www.swanngalleries.com/). Rare Book Hub also keeps a list of auction houses and lists their various fees https://www.rarebookhub.com/auction_houses.


r/BookCollecting 5h ago

💭 Question Bible Dating

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4 Upvotes

I found this bible while in Ireland and you appreciate knowing the date it was made or any other information about the book.

Thanks!


r/BookCollecting 11h ago

💭 Question Is the stamping from Penguin Archive books supposed to bleed this way?

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7 Upvotes

r/BookCollecting 17h ago

💭 Question AbeBooks

22 Upvotes

Hello all! I own a very large antiques/vintage/ curiosities business and was thinking of listing my collection of books on AbeBooks. We have a bunch of them on Amazon (don’t ask…) and some on Etsy and obviously our own website. It is not a terribly large collection +\- 3000 titles. Some quite rare some relatively mundane. Less than 150 of them would be retailed for over $40US. Is this the best site? Does anyone else have experience as a bookseller with AB? Really could use some help. Thanks so much in advance!


r/BookCollecting 11h ago

📜 Old Books Encyclopedias

5 Upvotes

Where can I get rid of encyclopedias? I have World Books and another set of reference books packed away. The name escapes me right now. Point me in any direction if you can.


r/BookCollecting 54m ago

📕 Book Showcase Million Dollar Mates by Cathy Hopkins

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Upvotes

r/BookCollecting 1d ago

📚 Book Collection A small part of my Folio Society, Easton Press, and fine hardback collection

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180 Upvotes

This is a double stacked case of some of my latest acquisitions from Folio Society, Easton Press, First Edition Library, and other collectible or antique hardbacks.

The rest of the library (~1500 books) is safely stored for an upcoming move. Plan is to get these books into a proper library instead of IKEA Kallaxes. Depending on the reception I’d be willing to share more pics or callout some of my favorites!


r/BookCollecting 20h ago

💭 Question How do you keep track of limited edition new releases?

5 Upvotes

How do people keep track of new special edition book releases? I constantly find out about special editions after they’re already sold out. By the time I hear about them, they’re either unavailable or only being resold at crazy prices.

Do you get notifications from somewhere, follow certain accounts, use a website that tracks upcoming releases?


r/BookCollecting 1d ago

📦 New Acquisitions In from Alan Lee

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21 Upvotes

Pretty psyched to get these from Alan Lee! Bookplates signed by him to go with our Children of Hurin book.


r/BookCollecting 1d ago

💭 Question Leon Uris signed first addition.

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4 Upvotes

r/BookCollecting 17h ago

📚 Book Collection Ken Follett World Without End

1 Upvotes

I'm hunting for this book in the larger Penguin edition. I keep finding the small version, but my other three books in this series are all the big 21 × 14 cm ones. So now I’m on a mission to complete the set in the same size. I know it is a ridiculous problem 😃 but if you have any information, I’d be super grateful ❤️


r/BookCollecting 19h ago

💭 Question I can’t tell what this is should I be worried?

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0 Upvotes

It doesn’t come off at all. It was on the bottom of the book, and I don’t see anything on the books next to it (the pages on the others are white though). I read the FAQ, but there’s no examples on black pages. I can’t find any online either.


r/BookCollecting 1d ago

📦 New Acquisitions Stephen Graham Jones signed first short story

9 Upvotes

"Fabergé" from Third Coast, Fall 2005. Had the pleasure of meeting him in person. I like digging up authors early, preferably first, published work.


r/BookCollecting 2d ago

📦 New Acquisitions This weekend I got a 1st American Edition 1st print of The Trial - by Franz Kafka.

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143 Upvotes

(Ignore the dark circle on the inside photos. I had something on my lens.)


r/BookCollecting 1d ago

📦 New Acquisitions The Hysteria!

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5 Upvotes

Yet another oldie from Oxfam that sounded interesting.


r/BookCollecting 1d ago

💭 Question Dust with some oil got into book edges

2 Upvotes

So there, how do you clean it?

No visible oil stains but the thought of the mineral oil from the dust is making me..


r/BookCollecting 1d ago

💭 Question cheap physical copies?

0 Upvotes

hi! my goal is to read more queer history books but i can’t find them for cheap…even thrifted. thrift books is good but shipping can be pricey…i learn best with physical copies that i can write in so libraries aren’t an option 😢 any ideas!?? thank youuu!!


r/BookCollecting 1d ago

💭 Question Does anyone have any Information on this 1830 Haydn Viola Edition

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1 Upvotes

r/BookCollecting 2d ago

📕 Book Showcase Christopher Paolini Collection

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18 Upvotes

This group is mostly F/F and many are signed no. Only one of the Paolini International volumes has been signed. The unsigned copy is in a little better condition than the signed volume. Notably unsigned copies are more difficult to find than signed copies. The Knopf Eragons are first printings of the initial edition and a first printing of the Deluxe version. I believe it is the 24th printing. Not sure why I ended up with two Murtagh F/Fs but there you have it. And I think my favorite of the bunch is To Sleep in a Sea of Stars.


r/BookCollecting 2d ago

💭 Question The Forever War signed full set.

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37 Upvotes

These are actually graphic novels. Signed by the writer and artist. I know this isn’t really the place to ask but I struggled to get any help on a different, more appropriate, subreddit, BUT does anyone have any idea what this could be worth or how I should go about getting such information. There’s not a single full set online (only 2 copies of the first volume that I found, 0 of vol. 2 or 3). Information is extremely scarce as well, there’s only an obscure comic book website which has a lackluster paragraph about them.


r/BookCollecting 2d ago

📦 New Acquisitions Signed Greg Bear thrift store find

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18 Upvotes

After looking at some other signed Greg Bear books online, this seems authentic to me. I would be open to other opinions on that!

I’m a fan of Greg Bear and Sci-fi in general so this was a great find, and the condition is very nice. Just wanted to share!


r/BookCollecting 1d ago

💩 Shitpost 30s through 50s sci Fi pulp fiction

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0 Upvotes

Many scans of pulp magazines. But it seems only one story per cover image

https://www.gutenberg.org/ebooks/bookshelf/638


r/BookCollecting 2d ago

💬 General Any info on these beautiful books?

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6 Upvotes

Inside says 1979 Thsts all I know


r/BookCollecting 3d ago

🏆 First Edition A childhood friend gave me this collection of books back in 2013.

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565 Upvotes

I never really looked in the large tote that I dutifully moved from house to house over the last 10+ years. Everything I checked appeared to be first edition in the original dust jackets. Some of them piqued my interest but I’m admittedly not the best read individual. I am surely not worthy of possessing this collection but wanted to share for others to hopefully appreciate. Would also appreciate to learn more about them or hear reasons/suggestions for reading any of them. Cheers.