DEAR SUN SPOTS: I read your May 22 column about what to do with extra tennis balls and must comment. A tennis ball should never be given to a dog. If the fuzz from these balls in ingested it can cause serious problems.

This fuzz can be absorbed in the stomach but doesn’t digest and cannot pass. It also does not show up in an X-ray. It is found by very expensive exploratory surgery. These toys can cause serious damage. Thanks. — joebearinmaine@gmail.com

ANSWER: Thank you for writing. Sun Spots had not heard that before, and she suspects others had not as well. She’s seen plenty of dogs dragging tennis balls around.

She checked the topic out online and found other concerns about tennis balls as well, such as the felt covering wearing down the dog’s teeth and the threat of choking if they chew one in half.

The following letter offers what might be better options for those old balls.

DEAR SUN SPOTS: In response to the person who wants to get rid of old tennis balls, the schools use them on the chairs as do assisted living homes, where they put them on walkers. Thanks for your help. — E.B.L. via email

DEAR SUN SPOTS: This is for the person who is looking for Karen Kingsbury books (May 18) or for anyone else looking for hard-to-find books. I have been very successful dealing with the Maine Book House in Oxford, 743-9300.

Provide the title and author, and they will research until they find it. I have found them to be very successful and the prices are very low compared to new books. There aren’t any shipping and handling charges when you pick it up.

Also, the Christian Book Distributors in Peabody, Mass., is a great way to find those types of books. The books are all new, and there isn’t any tax. They have clearance sales in most of their catalogs, which you will receive with all of your orders. — Dottie, Poland

ANSWER: Thanks to Dottie’s letter arriving just in time, Sun Spots was able to include the Maine Book House in her list of local booksellers, which was in Friday’s column (http://tinyurl.com/cplmvu9).

Most local dealers should be able to find Christian books, but in case they can’t, Sun Spots has included the following letter with their contact information.

DEAR SUN SPOTS: This is for the woman who was looking for books by Karen Kingsbury. Christian Book Distributors out of Peabody, Mass., has a large selection of her books. You can find them online at www.christianbook.com or call them at 1-800-CHRISTIAN and request their fiction catalog. — Beth via email

DEAR SUN SPOTS: I have 30 years of National Geographic magazines starting from 1979 in excellent shape that I would like to donate to a library or school. — No Name via email

ANSWER: The demand for these and for old encyclopedias is basically nonexistent, but maybe someone will respond. If not, Sun Spots recommends recycling.

DEAR SUN SPOTS: I can’t find the memorial section on the online version. Can you help? Thanks. — Jerry via email

ANSWER: Memorials are ads, so they are not viewable online unless you have a subscription to the e-edition.

This column is for you, our readers. It is for your questions and comments. There are only two rules: You must write to the column and sign your name (we won’t use it if you ask us not to). Please include your phone number. Letters will not be returned or answered by mail, and telephone calls will not be accepted. Your letters will appear as quickly as space allows. Address them to Sun Spots, P.O. Box 4400, Lewiston, ME 04243-4400. Inquiries can also be emailed to sunspots@sunjournal.com.