The activities of the Friends of the Castro Valley Library are supported by a large and enthusiastic group of volunteers. Their support is critical to the operation of the BookStore/Office and the book sales, publication of the newsletter and other documents, and many other functions of the organization. If you would like to volunteer, application forms are available at the BookStore/Office or you can fill out the online PDF application form. To fill out the online form, use Adobe Reader and print the filled out form or If you don't have Reader, you can print the form and fill it out. In either case, mail or bring the form in to the BookStore/Office.