Available on Amazon.com

The Friends currently have over 100 books and other media listed on Amazon.com. Our name on Amazon is FriendsofBooks, and our entire on-line store can be viewed at http://www.amazon.com/shops/A1AE92DUB78GQ4. You can access the store by typing the above string in your browser, by clicking on our name when viewing one of our listings or by clicking on the link above.

Don’t forget to mention us when purchasing through Amazon Smile. When you select Friends of the Castro Valley Library as your charity of choice, we will receive a 0.5% donation every time you make a purchase. Many great items “from soup to nuts” are designated as Smile products, so please check it out.

Visit our on-line store to see what we're offering today!

Winter Book Sale

Mark your calendars now for the Friends of the Castro Valley Library Winter Book Sale:

  • Friday, December 6th from 6 - 8 p.m. (Members-Only Preview Night)
  • Saturday, December 7th from 10 a.m. - 4 p.m.
  • Sunday, December 8th from 1 - 4 p.m. (It's Bag Day, where a bag of books is only $4, and we supply the bags!)

We will again feature our usual large selection of fiction, nonfiction, mystery, and children's books; as well as antiquarian; special price books; holiday; and gift-quality books at unbelieveable prices. We anticipate having at least 400 boxes of books at the sale. You will be glad you came!

We will need Volunteers for all sale days as well as for the set-up and clean-up days. Contact us at 510-733-3285 or This email address is being protected from spambots. You need JavaScript enabled to view it. if you can volunteer, or if you have any questions about the work or requirements. A signup sheet will be available in the Friends office approximately one month prior to the Book Sale date.

Planning to attend? Please remember to bring your current (2019) Friends of the Castro Valley Library membership card in order to take advantage of your $2.00 discount. You can join or renew at the door, or purchase a 2020 membership ahead of time. 

Book Sales

Friends of the Castro Valley Library holds three weekend Book Sales per year, in the Spring, Summer and Fall. Members. Sales start with a Member Preview of Friday and end with Bag Day on Sunday. Sales includes our usual large selection of fiction and mystery books, many categories of nonfiction, and antiquarian and special price books. At least 300 cartons of books will be available at each sale.

You will be glad you came!

Mark your calendars now—

The 2019 Book Sales are on the following dates:

  • April 26th-28th
  • August 16th-18th
  • December 6th-8th 

As always, these sales will be at the following times:

  • Friday night Member Preview—6 p.m. to 8 p.m.
  • Saturday—10 a.m. to 4 p.m.
  • Sunday Bag Sale—1 p.m. to 4 p.m., $4.00 for all the books you can put in a grocery-size bag that we provide.

Volunteers will be needed for all sale days as well as for the set-up and clean-up days. Contact us at 510-733-3285 or This email address is being protected from spambots. You need JavaScript enabled to view it. if you can volunteer or if you have any questions about the work or requirements. A signup sheet will be available in the Friends office approximately one month prior to the Book Sale date.

Planning to attend? Please remember to bring your current Friends of the Castro Valley Library membership card in order to take advantage of your $2.00 discount. Not a member? You can join at the door or purchase a membership ahead of time.

We may also have special sales at other times during the year. Remember to check frequently for notices in the newsletter, on our website, and posted at the bookstore.

Like us on Facebook and get updates on all our events as well as any special books or collections that come into the bookstore.