Ellen Cassedy discusses her book "We Are Here: Memories of the Lithuanian Holocaust" (University of Nebraska Press). At 2 p.m., Great Neck Library, 159 Bayview Ave., Great Neck; 516-466-8055, greatnecklibrary.org. Great Neck residents will be seated first.
Evan Geller, chief of surgery at St. Charles Hospital in Port Jefferson, speaks about his self-published novel, "God Bless the Dead." At 7:30 p.m., Book Revue, 313 New York Ave., Huntington; 631-271-1442, bookrevue.com
Emmy Award winner Bill Persky, co-creator of TV's "That Girl," speaks about his memoir, "My Life Is a Situation Comedy" (Mandevilla Press). At 6 p.m., Shelter Island Library, 37 N. Ferry Rd., Shelter Island; 631-749-0042, shelterislandpubliclibrary.org
Psychologist and relationship coach Anne-Renee Testa, author of "The Bully in Your Relationship" (McGraw-Hill), leads an interactive seminar on happiness; registration required. At 3 p.m., East Hampton Library, 159 Main St., 631-324-0222, ext. 3, easthamptonlibrary.org