Amy Ignatow signs copies of her young-adult book, "The Rocky Road Trip of Lynda Goldblatt and Julie Graham-Chang" (Amulet Books). At 6:30 p.m., Barnes & Noble, Country Glen Center, 91 Old Country Rd., Carle Place; 516-741-9850.
Mary Pope Osborne stamps copies of "Magic Tree House 20th Anniversary Edition: Dinosaurs Before Dark" (Random House). At 2 p.m., Barnes & Noble, Country Glen Center, 91 Old Country Rd., Carle Place; 516-741-9850. Wristbands distributed starting at 4 p.m.
Former New York Yankee Mickey Rivers joins author Ray Negron to discuss Negron's new book, "Yankee Miracles" (Liveright). At 7 p.m., Book Revue, 313 New York Ave., Huntington; 631-271-1442, bookrevue.com
Local author W.G. Griffiths signs copies of "Methuselah's Pillar" (Headline Books). At 7 p.m., Barnes & Noble, 1542 Northern Blvd., Manhasset; 516-365-6723.
Sports marketer Brandon Steiner discusses "You Gotta Have Balls: How a Kid From Brooklyn Started From Scratch, Bought Yankee Stadium and Created a Sports Empire" (Wiley). Former Major League players Howard Johnson, Roy White and Ron Blomberg sign photos given out with purchase of a book. At 4 p.m., Books & Books, 130 Main St., Westhampton Beach; 631-998-3260, booksandbookswhb.com