There's an event happening this weekend that's become an area tradition on Saturdays in the fall.

Can you guess what it is? Here are a few hints:

• It's packed with people.

• Parking is at a premium.

• Everyone there supports the home team.

No, it's not a Buckeyes game; it's the annual Market Day Book Sale sponsored by the Friends Foundation of Worthington Libraries. Market Day on Saturday, Sept. 23, is a community festival held in downtown Worthington.

Fun for the whole family, it includes musicians, food and craft vendors, a farmers market and more than 4,000 books available a short walk away at the Old Worthington Library, 820 High St.

This year's bonanza of book bargains will start at 9 a.m. Friday, Sept. 22, and continue through Sunday, Sept. 24.

Genres include children's, classics, cookbooks, home and garden, hardback and paperback fiction, travel and more. Most books are only $2.

If you can't wait until Sept. 22 to take a look at all the books the friends will have available, consider joining the organization. A members-only presale is scheduled from 7 to 9 p.m. Thursday, Sept. 21. You can join at that time.

Book sales are huge moneymakers for the organization, which depends on the proceeds to support Worthington Libraries activities and services not always covered by public funding.

The Friends Foundation provides about $55,000 each year to Worthington Libraries.

In 2017, the foundation has paid for April's community breakfast, all summer reading-club programming and prizes, as well as a thank-you party for the library's teen volunteers.

So while you and your family enjoy the spirit of yesteryear during Market Day on Sept. 23, don't forget to stop by Old Worthington Library and buy a bag or two of books.

Your generous support will enable the Friends Foundation to help keep Worthington Libraries one of the best systems in the state.

Hillary Kline is a communications specialist for Worthington Libraries.