Arthur Hufnagel Public Library of Glen Rock, 32 Main St., Glen Rock, offers these activities this month. For more information, call 235-1127

* True Colors: You Make a Difference, 6:30-7:30 p.m. Wednesday for grades 3-5, provided by the Susan Byrnes Health Education Center. Students will learn about basic personality traits, the need to accept and value people different from one's self, defining and improving communication, and team building. The participants will also identify ways in which kids bully, and how to stop bullying. Registration is required by calling 235-1127. This is a free event.

* Big Holiday Book Sale, 6-9 p.m. Friday, Nov. 23, sponsored by Friends of the Library. The sale continues during regular library hours and through the New Year during Train Show hours, 6-9 p.m. Fridays and 2-6 p.m. Sundays.