Yes, it’s that time of year again when your sagging bookshelves need a break from all those tomes you no longer need, or never will read; you can use the newly found space for the exciting new volumes you will purchase at the annual Library Park Book Sale. You can find a wide selection of books on Saturday, May 16 in that lovely park next to the library, under the towering pin oaks: Fiction, non-fiction, cookbooks and romance, chick lit and children’s books, travel books and history, craft books and books about sailing, sailing away from it all perhaps, with books stowed in a dry place, of course. Book donations will be welcomed until the end of Friday, May 15. If it rains, the sale will be moved indoors. Hardcovers will sell for $2; paperbacks for $1. If you need a beautiful, sturdy bag for carrying your new treasures home, consider purchasing a specially designed ecologically appropriate Friends of the South End Library book bag for $10. All donations will be used by the South End library staff for library programming and supplies, that means for you and your families. If you would like to volunteer, call 617 536-8241..press 0 for the branch staff, and tell them you’re theirs for the book sale. You will be rewarded in heaven.