Northbrook Public Library Reference Staff can answer your questions during our regular business hours. If you need immediate assistance, please call us at 847-272-6224 or e-mail us at firstname.lastname@example.org First Name * Last Name * Email * Phone Question * Leave this field blank CAPTCHAThis question is for testing whether or not you are a human visitor and to prevent automated spam submissions. Math question * 11 + 1 = Solve this simple math problem and enter the result. E.g. for 1+3, enter 4.